Update agent_service: fix message group of scheduler event

pqai_agent/agent_service.py

@@ -221,7 +221,7 @@ class AgentService:
         # 系统消息使用特定的msgId，无实际意义
         msg.msgId = -MessageType.AGGREGATION_TRIGGER.value
         if self.scheduler_mode == 'mq':
-            self.scheduler_queue.produce(msg)
+            self.scheduler_queue.produce(msg, msg_group='agent_system')
         else:
             self.scheduler.add_job(lambda: self.receive_queue.produce(msg),
                                    'date',