后台一键删除全部逻辑优化

app/enterprise/model/Message.php

@@ -409,6 +409,7 @@ class Message extends BaseModel
             case "all":
                 self::delMsg();
                 self::delMsg(1);
+                wsSendMsg(0, 'delSystemAllMsg', [], 1);
             break;
             default:
                 return false;