[Enhancement]: Require GitHub token before enabling "Show commits" checkbox

[Anshumancanrock]

Enhancement Summary

The "Show commits on open PRs/draft PRs" checkbox can currently be enabled without a GitHub token, even though the feature won't work without one.

Motivation

The "Show commits" checkbox uses GitHub's GraphQL API which requires authentication. Without a token, the checkbox can be enabled but commits never load, confusing users into thinking the feature is broken.

Proposed Solution

• Prevent the checkbox from being checked if no GitHub token is set
• Show a warning message when user tries to enable it without a token
• Same behavior as the existing "Enable filtering" checkbox

Alternatives Considered

• Just showing a tooltip (already exists but users ignore it)
• Disabling the checkbox entirely when no token, but warning is more user-friendly

Screenshots / Video

Recording.2026-01-19.015440.mp4

Additional Context

This matches the existing UX pattern used for the repository filtering feature.

Contribution Checklist

• I have checked existing enhancement requests
• I have clearly described the proposed change
• I have explained the motivation and context
• I am willing to help implement this feature

[Osank31]

Can you assign this issue to me

[github-actions]

@Osank31 Please go ahead and create a PR when you are ready. We do not formally assign issues. Contributors are free to pick up any open issue based on their availability. You can open a PR or even a draft PR to let others know that you’re working on it.