Fix issue while inserting resource (#6808)

Author: bhsubra

src/Bicep.Core/Configuration/CloudConfiguration.cs

@@ -43,7 +43,7 @@ public CloudConfiguration(Cloud data, Uri resourceManagerEndpointUri, Uri active
         public Uri ActiveDirectoryAuthorityUri { get; }
 
         // this is needed for all track 1 SDKs and track 2 management plane SDKs
-        public string AuthenticationScope => ResourceManagerEndpointUri.AbsoluteUri + ".default";
+        public string AuthenticationScope => ResourceManagerEndpointUri.AbsoluteUri;
 
         // this is needed for track 2 data plane SDKs
         // this does not work with regional ARM endpoints