Remap option or disable timeline/response expansions

### Describe the bug

Context:
https://docs.github.com/en/copilot/reference/cli-command-reference

There are a couple of Ctrl-[key] shortcuts that expands timeline/reasoning. On a long running session if you accidentally hit Ctrl-E în another terminal window, it became a nightmare in copilot cli. And you cannot stop it until agents finished their work (or you forcibly kill the process that's also a painful).

Here is a short video:
https://github.com/user-attachments/assets/4a0e36ad-6aaf-40c6-b4b4-2837916b4132

### Affected version

1.0.3

### Steps to reproduce the behavior

1. Have a long running session with copilot cli.
2. Ask agent to do something
3. Hit Ctrl-O or Ctrl-E (could be also before starting the agent or when agent asks to provide the answer for a question)
4. Observe infinite expanding of reasoning/output progress.

### Expected behavior

I would like to have an option to either completely disable such combinations or remap then to have extra char combination like in tmux, picocom.

### Additional context

Run standalone copilot cli on MacOS