copilot --remote sessions do not update realtime.

### Describe the bug

when accessing a remote session either via github mobile or in browser, the response is not reflected realtime, the only way to see the response consistently is refreshing the entire page, or relaunching github mobile. It did work sometimes, but it took minutes for the response to show up.

### Affected version

latest

### Steps to reproduce the behavior

start a remote session

### Expected behavior

should see responses immediately

### Additional context

_No response_

首先从报告中的入口点复现该问题：启动一个远程会话，并在 GitHub mobile 或浏览器中观察它，不要刷新。比较响应立即出现的情况与只有在刷新或重新启动应用后才出现的情况；当远程会话的响应能够在这些客户端中始终实时可见时，即表示完成。

由索引模型根据 Issue 内容生成。