refactor: 优化kook适配器的日志打印内容

Author: shuiping233

astrbot/core/platform/sources/kook/kook_adapter.py

@@ -88,7 +88,7 @@ async def _on_received(self, event: KookMessageEventData):
                 logger.error(f"[KOOK] 消息处理异常: {e}")
         elif event_type == KookMessageType.SYSTEM:
             logger.debug(f'[KOOK] 消息为系统通知, 通知类型为"{event.extra.type}"')
-            return
+
         logger.debug(f"[KOOK] 原始消息数据: {event.to_json()}")
 
     async def run(self):