[Bug Report]: Trying to remove `RootManageSharedAccessKey` during removal

### Describe the bug

Add [RootManageSharedAccessKey] of type [Microsoft.EventHub/namespaces/authorizationRules] to the Remove-Resource.ps1 file and gracefully skip it.

### To reproduce

Run the the work watchers pipeline

### Code snippet

```Bicep
NA
```

### Relevant log output

```Shell
VERBOSE: [-] Removing resource [RootManageSharedAccessKey] of type [Microsoft.EventHub/namespaces/authorizationRules]
WARNING: [!] Removal moved back for retry. Reason: [InvalidDeleteRequestOnDefaultSasRule : Cannot delete default Sas rule RootManageSharedAccessKey used by all namespaces
CorrelationId: 4e50be81-cc48-4018-9357-c996e4890c2e]
```