Make pull request titles clickable (link to GitHub PR)

[O2sa]

Pull requests are currently displayed without a direct link to GitHub.

We want to allow users to click on a PR title and be redirected to the actual pull request page on GitHub.

🎯 Expected Behavior

• Clicking a PR title opens the PR page on GitHub
• The link should open in a new tab

✅ Tasks

• Update GraphQL query to fetch PR URL
• Pass PR URL to frontend
• Wrap PR title with clickable link
  💡 Hints
  Hint 1:
  GitHub GraphQL API provides PR URL via:
  url

Hint 2:
Example:

pullRequests {
  nodes {
    title
    url
  }
}

Hint 3:
Use:

<a href={pr.url} target="_blank" rel="noopener noreferrer">
  {pr.title}
</a>

Hint 4:
Make sure links are accessible and styled clearly

🎯 Acceptance Criteria

• PR titles are clickable
• Redirects to correct GitHub PR page
• Works for all listed PRs

[github-actions]

🎉 Thank you for your interest in contributing!

The issue has been assigned to @xyf25. Happy coding!