[Feature] TokenNotExistError listener

[LionYan-Coder]

Version information

• Device: e.g. iPhone X
• OS: e.g. iOS 14.7.1
• Package Version: e.g. v1.0.9
• Flutter Version: e.g. v2.8.0

Is your feature request related to a problem?

Describe the solution you'd like

希望可以加个客户端不存在或者错误的 OnConnectListener ，我好像在哪个版本看到了有这个？但是现在3.8.0 没有，我认为挺重要的这个

Describe alternatives you've considered

Additional context

[std-s]

hi, you can pay attention to these two monitors.

[LionYan-Coder]

hi, you can pay attention to these two monitors.

Thanks

[std-s]

Close it first, then open it again if there is a problem.