fix: support custom token in review action

[imranbarbhuiya]

Issue for this PR

Closes #47967

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation

What does this PR do?

When reacting to the pr with 👀, it uses the provided token but remove uses hardcoded name so custom tokens were adding reaction but it wasnt removing it. So now it resolves the user from token and removes the reaction properly. I did changes with agent but i understand and know what it did and why

How did you verify your code works?

I've tested with a local copy of this code in my repo and it's adding and removing the 👀 emoji properly.

Screenshots / recordings

If this is a UI change, please include a screenshot or recording.

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

If you do not follow this template your PR will be automatically rejected.

[github-actions]

Hey! Your PR title Feat/GitHub custom author 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]

Thanks for your contribution!

This PR doesn't have a linked issue. All PRs must reference an existing issue.

Please:

1. Open an issue describing the bug/feature (if one doesn't exist)
2. Add Fixes #<number> or Closes #<number> to this PR description

See CONTRIBUTING.md for details.

[github-actions]

Thanks for updating your PR! It now meets our contributing guidelines. 👍