Run a cmdlet with -Asjob, when error report in EndProcessing(), the job state will still be "Completed"

## Description
Run a cmdlet with -Asjob, when error report in EndProcessing(), the job state will still be "Completed".
This will misleading customer think the cmdlet runs success, but actually failed.

## Steps to reproduce
Try to overwrite a block blob with page blob, If you run it with -Asjob, will see the task finish with State as "Completed" (`$task.error` is not null).
But if you run it without -asjob, will see error reported.

This is caused by the failure happens in EndProcessing()

##### with -asjob
```powershell
PS C:\temp> $task = Set-AzStorageBlobContent -File .\testfile_2048K -Container $containerName -Blob test.txt -Force -Context $ctx -BlobType Page -AsJob

PS C:\temp> $task

Id Name PSJobTypeName State HasMoreData Location Command
-- ---- ------------- ----- ----------- -------- -------
2 Long Running... AzureLongRun... Completed True localhost Set-AzStorageBlobContent

PS C:\temp> $task.Error
The blob type is invalid for this operation. HTTP Status Code: 409 - HTTP Error Message: The blob type is invalid for this operation.
ErrorCode: InvalidBlobType
ErrorMessage: The blob type is invalid for this operation.
RequestId:13e87fc5-401e-001a-6815-96bb1d000000
Time:2020-09-29T04:04:15.1951577Z
+ CategoryInfo : CloseError: (:) [], StorageException
+ FullyQualifiedErrorId : StorageException
```

##### without -asjob
```powershell
PS C:\temp> Set-AzStorageBlobContent -File .\testfile_2048K -Container $containerName -Blob test.txt -Force -Context $ctx -BlobType Page
Set-AzStorageBlobContent : The blob type is invalid for this operation. HTTP Status Code: 409 - HTTP Error Message: The blob type is invalid for this operation.
ErrorCode: InvalidBlobType
ErrorMessage: The blob type is invalid for this operation.
RequestId:1ce5ce3f-a01e-0070-0d11-966335000000
Time:2020-09-29T03:34:39.9380626Z
At line:1 char:1
+ Set-AzStorageBlobContent -File .\testfile_2048K -Container $container ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : CloseError: (:) [Set-AzStorageBlobContent], StorageException
+ FullyQualifiedErrorId : StorageException,Microsoft.WindowsAzure.Commands.Storage.Blob.SetAzureBlobContentCommand

```

## Environment data

```
PS C:\temp> $PSVersionTable

Name Value
---- -----
PSVersion 5.1.19041.1
PSEdition Desktop
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
BuildVersion 10.0.19041.1
CLRVersion 4.0.30319.42000
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1
```

## Module versions

This happens on lastest Az.Storage 2.6.0 + Az.Account 1.9.4
```powershell

PS C:\temp> Get-Module

ModuleType Version Name ExportedCommands
---------- ------- ---- ----------------
Script 1.9.4 Az.Accounts {Add-AzEnvironment, Clear-AzContext, Clear-AzDefault, Connect-AzAccount...}
Script 2.6.0 Az.Storage {Add-AzRmStorageContainerLegalHold, Add-AzStorageAccountManagementPolicyAction, Add-AzStorageAccountNetworkRule, Close-AzStorageFileHandle...}
Script 1.0.0.0 ISE {Get-IseSnippet, Import-IseSnippet, New-IseSnippet}
Manifest 3.1.0.0 Microsoft.PowerShell.Management {Add-Computer, Add-Content, Checkpoint-Computer, Clear-Content...}
Manifest 3.0.0.0 Microsoft.PowerShell.Security {ConvertFrom-SecureString, ConvertTo-SecureString, Get-Acl, Get-AuthenticodeSignature...}
Manifest 3.1.0.0 Microsoft.PowerShell.Utility {Add-Member, Add-Type, Clear-Variable, Compare-Object...}
Manifest 3.0.0.0 Microsoft.WSMan.Management {Connect-WSMan, Disable-WSManCredSSP, Disconnect-WSMan, Enable-WSManCredSSP...}
Binary 1.1.0.0 PSScheduledJob {Add-JobTrigger, Disable-JobTrigger, Disable-ScheduledJob, Enable-JobTrigger...}
Manifest 2.0.0.0 PSWorkflow {New-PSWorkflowExecutionOption, New-PSWorkflowSession, nwsn}
```

## Debug output

Add -debug , the result is same.
```
PS C:\temp> $task = Set-AzStorageBlobContent -File .\testfile_2048K -Container $containerName -Blob test.txt -Force -Context $ctx -BlobType Page -AsJob -Debug
DEBUG: 12:08:21 PM - Use storage account 'weirp1' from storage context.

PS C:\temp> $task

Id Name PSJobTypeName State HasMoreData Location Command
-- ---- ------------- ----- ----------- -------- -------
3 Long Running... AzureLongRun... Completed True localhost Set-AzStorageBlobContent

PS C:\temp> $task.Error
The blob type is invalid for this operation. HTTP Status Code: 409 - HTTP Error Message: The blob type is invalid for this operation.
ErrorCode: InvalidBlobType
ErrorMessage: The blob type is invalid for this operation.
RequestId:f54b558d-801e-0005-2c16-960819000000
Time:2020-09-29T04:08:26.0895834Z
+ CategoryInfo : CloseError: (:) [], StorageException
+ FullyQualifiedErrorId : StorageException
```

## Error output

```
PS C:\temp> Resolve-AzError
WARNING: Upcoming breaking changes in the cmdlet 'Resolve-AzError' :
The `Resolve-Error` alias will be removed in a future release. Please change any scripts that use this alias to use `Resolve-AzError` instead.
Note : Go to https://aka.ms/azps-changewarnings for steps to suppress this breaking change warning, and other information on breaking changes in Azure PowerShell.

HistoryId: 6

Message : The blob type is invalid for this operation. HTTP Status Code: 409 - HTTP Error Message: The blob type is invalid for this operation.
ErrorCode: InvalidBlobType
ErrorMessage: The blob type is invalid for this operation.
RequestId:1ce5ce3f-a01e-0070-0d11-966335000000
Time:2020-09-29T03:34:39.9380626Z
StackTrace :
Exception : Microsoft.Azure.Storage.StorageException
InvocationInfo : {Set-AzStorageBlobContent}
Line : Set-AzStorageBlobContent -File .\testfile_2048K -Container $containerName -Blob test.txt -Force -Context $ctx -BlobType Page
Position : At line:1 char:1
+ Set-AzStorageBlobContent -File .\testfile_2048K -Container $container ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
HistoryId : 6

Message : The blob type is invalid for this operation.
StackTrace : at Microsoft.WindowsAzure.Commands.Storage.Common.DataMovementTransferHelper.d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.WindowsAzure.Commands.Storage.Blob.SetAzureBlobContentCommand.d__58.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.WindowsAzure.Commands.Storage.Common.LimitedConcurrencyTaskScheduler.d__26.MoveNext()
Exception : Microsoft.Azure.Storage.StorageException
InvocationInfo : {Set-AzStorageBlobContent}
Line : Set-AzStorageBlobContent -File .\testfile_2048K -Container $containerName -Blob test.txt -Force -Context $ctx -BlobType Page
Position : At line:1 char:1
+ Set-AzStorageBlobContent -File .\testfile_2048K -Container $container ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
HistoryId : 6

HistoryId: 5

Message : This operation is only supported on a hierarchical namespace account.
StackTrace : at Azure.Storage.Files.DataLake.DataLakeRestClient.Path.GetPropertiesAsync_CreateResponse(ClientDiagnostics clientDiagnostics, Response response)
at Azure.Storage.Files.DataLake.DataLakeRestClient.Path.d__12.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Azure.Storage.Files.DataLake.DataLakePathClient.d__67.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Azure.Storage.Files.DataLake.DataLakePathClient.GetAccessControl(Nullable`1 userPrincipalName, DataLakeRequestConditions conditions, CancellationToken cancellationToken)
at Azure.Storage.Files.DataLake.DataLakeFileClient.GetAccessControl(Nullable`1 userPrincipalName, DataLakeRequestConditions conditions, CancellationToken cancellationToken)
at Microsoft.WindowsAzure.Commands.Common.Storage.ResourceModel.AzureDataLakeGen2Item..ctor(DataLakeFileClient fileClient)
at Microsoft.WindowsAzure.Commands.Storage.StorageCloudBlobCmdletBase.WriteDataLakeGen2Item(IStorageBlobManagement channel, DataLakeFileClient fileClient, Nullable`1 taskId)
at Microsoft.WindowsAzure.Commands.Storage.Blob.Cmdlet.NewAzDataLakeGen2ItemCommand.d__55.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.WindowsAzure.Commands.Storage.Common.LimitedConcurrencyTaskScheduler.d__26.MoveNext()
Exception : Azure.RequestFailedException
InvocationInfo : {New-AzDataLakeGen2Item}
Line : New-AzDataLakeGen2Item -FileSystem $containerName -Path testfile -Source C:\temp\1.txt -Context $ctx
Position : At line:1 char:1
+ New-AzDataLakeGen2Item -FileSystem $containerName -Path testfile -Sou ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
HistoryId : 5

Message : Exception of type 'System.Exception' was thrown.
StackTrace :
Exception : System.Exception
InvocationInfo : {New-AzDataLakeGen2Item}
Line : New-AzDataLakeGen2Item -FileSystem $containerName -Path testfile -Source C:\temp\1.txt -Context $ctx
Position : At line:1 char:1
+ New-AzDataLakeGen2Item -FileSystem $containerName -Path testfile -Sou ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
HistoryId : 5

HistoryId: -1

Message : You cannot call a method on a null-valued expression.
StackTrace : at System.Management.Automation.ExceptionHandlingOps.CheckActionPreference(FunctionContext funcContext, Exception exception)
at System.Management.Automation.Interpreter.ActionCallInstruction`2.Run(InterpretedFrame frame)
at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(InterpretedFrame frame)
at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(InterpretedFrame frame)
at System.Management.Automation.Interpreter.Interpreter.Run(InterpretedFrame frame)
at System.Management.Automation.Interpreter.LightLambda.RunVoid1[T0](T0 arg0)
at System.Management.Automation.ScriptBlock.InvokeWithPipeImpl(ScriptBlockClauseToInvoke clauseToInvoke, Boolean createLocalScope, Dictionary`2 functionsToDefine, List`1 variablesToDefine, ErrorHandlingBehavior errorHandlingBehavior, Object dollarUnder, Object input, Object scriptThis, Pipe outputPipe,
InvocationInfo invocationInfo, Object[] args)
at System.Management.Automation.ScriptBlock.<>c__DisplayClass57_0.b__0()
at System.Management.Automation.Runspaces.RunspaceBase.RunActionIfNoRunningPipelinesWithThreadCheck(Action action)
at System.Management.Automation.ScriptBlock.InvokeWithPipe(Boolean useLocalScope, ErrorHandlingBehavior errorHandlingBehavior, Object dollarUnder, Object input, Object scriptThis, Pipe outputPipe, InvocationInfo invocationInfo, Boolean propagateAllExceptionsToTop, List`1 variablesToDefine, Dictionary`2
functionsToDefine, Object[] args)
at System.Management.Automation.ScriptBlock.DoInvokeReturnAsIs(Boolean useLocalScope, ErrorHandlingBehavior errorHandlingBehavior, Object dollarUnder, Object input, Object scriptThis, Object[] args)
at Microsoft.PowerShell.Commands.Internal.Format.MshExpression.GetValue(PSObject target, Boolean eatExceptions)
Exception : System.Management.Automation.RuntimeException
InvocationInfo : {}
Line : $_.SnapshotTime.UtcDateTime.ToString("o")
Position : At line:1 char:1
+ $_.SnapshotTime.UtcDateTime.ToString("o")
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
HistoryId : -1

Message : Exception calling "GetFullPath" with "1" argument(s): "Illegal characters in path."
StackTrace : at System.Management.Automation.ExceptionHandlingOps.ConvertToMethodInvocationException(Exception exception, Type typeToThrow, String methodName, Int32 numArgs, MemberInfo memberInfo)
at CallSite.Target(Closure , CallSite , Type , String )
at System.Dynamic.UpdateDelegates.UpdateAndExecute2[T0,T1,TRet](CallSite site, T0 arg0, T1 arg1)
at System.Management.Automation.Interpreter.DynamicInstruction`3.Run(InterpretedFrame frame)
at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(InterpretedFrame frame)
Exception : System.Management.Automation.MethodInvocationException
InvocationInfo : {}
Line : [System.IO.Path]::GetFullPath("\\?\c:\test.csv")
Position : At line:1 char:1
+ [System.IO.Path]::GetFullPath("\\?\c:\test.csv")
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
HistoryId : -1

Message : Illegal characters in path.
StackTrace : at System.Security.Permissions.FileIOPermission.EmulateFileIOPermissionChecks(String fullPath)
at System.Security.Permissions.FileIOPermission.QuickDemand(FileIOPermissionAccess access, String fullPath, Boolean checkForDuplicates, Boolean needFullPath)
at CallSite.Target(Closure , CallSite , Type , String )
Exception : System.ArgumentException
InvocationInfo : {}
Line : [System.IO.Path]::GetFullPath("\\?\c:\test.csv")
Position : At line:1 char:1
+ [System.IO.Path]::GetFullPath("\\?\c:\test.csv")
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
HistoryId : -1

The Azure PowerShell team is listening, please let us know how we are doing: https://aka.ms/azpssurvey?Q_CHL=ERROR.
```