fix: Fix typing of include_spark parameter (#34815) (#34838)

Author: kdestin

sdk/ml/azure-ai-ml/azure/ai/ml/operations/_feature_store_operations.py

@@ -508,7 +508,7 @@ def begin_provision_network(
         self,
         *,
         feature_store_name: Optional[str] = None,
-        include_spark: Optional[bool] = False,
+        include_spark: bool = False,
         **kwargs: Any,
     ) -> LROPoller[ManagedNetworkProvisionStatus]:
         """Triggers the feature store to provision the managed network. Specifying spark enabled