当关闭pc在线通知时可以清理掉历史在线状态

broker/src/main/java/io/moquette/spi/IMessagesStore.java

@@ -140,6 +140,8 @@ public interface IMessagesStore {
 
     ErrorCode modifyUserInfo(String userId, WFCMessage.ModifyMyInfoRequest request) throws Exception;
 
+    void forceCleanOnlineStatus(String userId, String clientId);
+
     void updateUserOnlineSetting(MemorySessionStore.Session session, boolean online);
 
     ErrorCode modifyUserStatus(String userId, int status);