[Az.DesktopVirtualization] Get-AzWvdApplication ApplicationGroupName is an alias to the actual parameter groupname cmdlet does not match docs

### Description

Running `Get-AzWvdApplication` prompts you for a GroupName parameter, this isn't documented in the examples which show the parameter as ApplicationGroupName although it is documented in the syntax section.

ApplicationGroupName is the better parameter and GroupName should be made the alias in the code to make sure this isn't a breaking change.

### Issue script & Debug output

```PowerShell
N/A
```

### Environment data

```PowerShell
Name Value
---- -----
PSVersion 7.3.3
PSEdition Core
GitCommitId 7.3.3
OS Microsoft Windows 10.0.22621
Platform Win32NT
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1
WSManStackVersion 3.0
```

### Module versions

```PowerShell
ModuleType Version PreRelease Name ExportedCommands
---------- ------- ---------- ---- ----------------
Script 2.12.1 Az.Accounts {Add-AzEnvironment, Clear-AzConfig, Clear-AzContext, Clear-AzDefault…}
Script 3.1.1 Az.DesktopVirtualization {Disconnect-AzWvdUserSession, Expand-AzWvdMsixImage, Get-AzWvdApplication, Get-AzWvdApplicationGroup…}
```

### Error output

```PowerShell
N/A
```