Update test related to DDL on worker

With release-13.0 it's not allowed to execute GRANT on COLUMNS on the worker
node anymore, updated tests accordingly.

src/test/regress/expected/grant_on_table_propagation.out

@@ -359,6 +359,8 @@ ORDER BY 1, 2;
 \c - - - :worker_1_port
 SET search_path TO grant_on_table;
 GRANT SELECT (a, b) ON ref_table TO grant_user_0;
+ERROR:  operation is not allowed on this node
+HINT:  Connect to the coordinator and run it again.
 -- check on coordinator and workers
 \c - - - :master_port
 SET search_path TO grant_on_table;