优化-ws断开只移除本平台token，挂接平台token不移除

liusuyi

2026-03-02 27a2a8d133b99cba028da5934359ff4868506939

 ard-sample/src/main/java/com/ard/sample/component/mqtt/model/EventsReceiver.java

@@ -26,6 +26,9 @@

    private String sn;

    private String gateway;

    private String type;

    private String method;
}