Py: add update_time in select list when list data sync logs (#18867)

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

api/db/services/connector_service.py

@@ -285,11 +285,8 @@ class SyncLogsService(CommonService):
             Connector.prune_freq.alias("prune_freq"),
             Knowledgebase.name.alias("kb_name"),
             cls.model.status,
+            cls.model.update_time,
         ]
-        if _is_gaussdb_compatible_metadata_db():
-            # GaussDB requires a DISTINCT query's ORDER BY expression in the
-            # select list.
-            fields.append(cls.model.update_time)
         if not connector_id:
             fields.append(Connector.config)