[Feature]: Update Entra application settings for all properties

### Description of the new feature

I'm trying to set the `Service Management Reference` value for an Entra application but cannot see how to do it with powershell. With Azure CLI I can do the following:

```
az ad app update --id [id] --set serviceManagementReference=[my-value]
```

It would be great to have a an equivalent for the Azure Powershell cmdlets

### Proposed implementation details (optional)

_No response_

Start by reviewing the Azure CLI `az ad app update --set serviceManagementReference` example and the existing Azure PowerShell cmdlets for Entra applications. Confirm which application properties are in scope, then verify that the intended properties, including `serviceManagementReference`, can be updated through equivalent PowerShell commands.

Written by the indexing model from the issue text.