feat(app): add question tool UI for web

[offlinehacker]

What does this PR do?

Implements question-answering tool UI for web. Fixes #7599

• Implemented as part of message-part.tsx as other prompts for permissions.
• Allows keyboard navigation using left/right/up/down/enter keys, as well as answer submission.
• Writing a new prompt will correctly dismiss the question, so session will not be stuck.
• Correctly shows the form after refreshing the page.

May still need work on design, but I think AI quite nailed it after few iterations.

How did you verify your code works?

Tested it on web:

[github-actions]

Hey! Your PR title feat(app,ui): add question tool UI for web doesn't follow conventional commit format.

Please update it to start with one of:

• feat: or feat(scope): new feature
• fix: or fix(scope): bug fix
• docs: or docs(scope): documentation changes
• chore: or chore(scope): maintenance tasks
• refactor: or refactor(scope): code refactoring
• test: or test(scope): adding or updating tests

Where scope is the package name (e.g., app, desktop, opencode).

See CONTRIBUTING.md for details.

[github-actions]

The following comment was made by an LLM, it may be inaccurate:

Potential Duplicate Found:

PR #7732: feat(web): add question tool support to web UI
#7732

This PR appears to be addressing the same feature - adding question tool UI support to the web interface. Both PRs are targeting similar functionality and may be duplicates or overlapping work.

[offlinehacker]

@adamdotdevin please review 🙏