Handle Missing Properties from Workspace Operations Classes (#36461)

* Update workspace.py

* Update workspace.py

sdk/ml/azure-ai-ml/azure/ai/ml/entities/_workspace/workspace.py

@@ -334,6 +334,14 @@ def _from_rest_object(cls, rest_obj: RestWorkspace) -> Optional["Workspace"]:
         if hasattr(rest_obj, "ml_flow_tracking_uri"):
             mlflow_tracking_uri = rest_obj.ml_flow_tracking_uri
 
+        # TODO: Remove once Online Endpoints updates API version to at least 2023-08-01
+        allow_roleassignment_on_rg = None
+        if hasattr(rest_obj, "allow_roleassignment_on_rg"):
+            allow_roleassignment_on_rg = rest_obj.allow_roleassignment_on_rg
+        system_datastores_auth_mode = None
+        if hasattr(rest_obj, "system_datastores_auth_mode"):
+            system_datastores_auth_mode = rest_obj.system_datastores_auth_mode
+
         # TODO: remove this once it is included in API response
         managed_network = None
         if hasattr(rest_obj, "managed_network"):
@@ -386,10 +394,10 @@ def _from_rest_object(cls, rest_obj: RestWorkspace) -> Optional["Workspace"]:
             identity=identity,
             primary_user_assigned_identity=rest_obj.primary_user_assigned_identity,
             managed_network=managed_network,
-            system_datastores_auth_mode=rest_obj.system_datastores_auth_mode,
+            system_datastores_auth_mode=system_datastores_auth_mode,
             feature_store_settings=feature_store_settings,
             enable_data_isolation=rest_obj.enable_data_isolation,
-            allow_roleassignment_on_rg=rest_obj.allow_roleassignment_on_rg,
+            allow_roleassignment_on_rg=allow_roleassignment_on_rg,
             hub_id=rest_obj.hub_resource_id,
             workspace_id=rest_obj.workspace_id,
             serverless_compute=serverless_compute,