[功能请求] 在聊天界面上滑弹出输入法并聚焦输入框

### QQ(TIM) 版本 / QQ(TIM) Version

QQ 9.1.31 / 9.+

### 为什么你认为需要此功能

该功能在9之前普遍存在，9后被移除。
点击下方输入框不如上滑输入更便捷。

### 联系到哪些已经存在的 bug 或者功能

_No response_

### 具体功能需要 / Detailed features requirements

聊天界面上滑弹出输入法并自动聚焦到输入框等待输入文字。
视频参考：
https://github.com/user-attachments/assets/5c72c741-4dbd-412f-86f0-7abefd18df91
动态图参考：

No source file, test, or entry point is identified. Reproduce the QQ/TIM chat gesture described, then trace the chat UI handling to find where an upward swipe can focus the input field and show the keyboard. Done means the gesture works in the chat interface and the input is ready for typing.

Written by the indexing model from the issue text.