Get-AzADApplication Does Not Return Results in USGov

### Description

When using the `Get-AzADApplication` cmdlet in US Gov cloud, the cmdlet does not return any results. This issue does not repro when using AAD Public.

Proof that the app in the repro below exists:

### Issue script & Debug output

```PowerShell
PS C:\Users\eric> Connect-AzAccount -Environment AzureUSGovernment
PS C:\Users\eric> $objectId = (Get-AzADApplication -ApplicationId $applicationId).Id
PS C:\Users\eric> echo $objectId # no results, expected to return object ID of app in screenshot above.
PS C:\Users\eric> echo $applicationId
5ac3cfa7-a42a-4a42-9600-177bf6ab55e0
PS C:\Users\eric> Get-AzADApplication -Count # no results - expected result: 2 apps
```

### Environment data

```PowerShell
PS C:\Users\eric> $PSVersionTable.PSVersion

Major Minor Patch PreReleaseLabel BuildLabel
----- ----- ----- --------------- ----------
7 4 2
```

### Module versions

```PowerShell
PS C:\Users\eric> Get-Module Az*

ModuleType Version PreRelease Name ExportedCommands
---------- ------- ---------- ---- ----------------
Script 2.15.1 Az.Accounts {Add-AzEnvironment, Clear-AzConfig, Clear-AzContext, …
Script 6.15.1 Az.Resources {Export-AzResourceGroup, Export-AzTemplateSpec, Get-A…
```

### Error output

_No response_

Start with the Get-AzADApplication cmdlet in the Az.Resources module and reproduce the issue after connecting with AzureUSGovernment. Compare its application lookup and count behavior with AAD Public; done means the application ID returns its object ID and Get-AzADApplication -Count returns the expected two applications.

Written by the indexing model from the issue text.