[功能请求] 更改解散群和被踢出的群的状态

### QQ(TIM)版本/QQ(TIM) Version

9.0.0.14110

### 为什么你认为需要此功能

为了取证、查找聊天记录等

### 联系到哪些已经存在的bug或者功能

_No response_

### 具体功能需要/Specific features require

更改解散群和被踢出的群为已加入的状态

The issue names no source files, tests, or entry points. Start by locating the handling of disbanded and forcibly exited groups, then determine how group membership state is represented. Done means both cases remain marked as joined without losing the evidence or chat-history access described in the request.

Written by the indexing model from the issue text.