Fix postgres_user not commiting changes when groups is set (#64835)

changelogs/fragments/64807-postgresql_user_fix_not_commiting_changes_when_groups_is_set.yml

@@ -0,0 +1,2 @@
+bugfixes:
+- postgresql_user - fix the module doesn't correctly commit changes if groups is set (https://github.com/ansible/ansible/issues/64806). 

lib/ansible/modules/database/postgresql/postgresql_user.py

@@ -940,7 +940,7 @@ def main():
             target_roles = []
             target_roles.append(user)
             pg_membership = PgMembership(module, cursor, target_roles, groups)
-            changed = pg_membership.grant()
+            changed = pg_membership.grant() or changed
 
     else:
         if user_exists(cursor, user):