fix(gh): print 'No Pull Requests' when pr list is empty

[saschabuehrle]

Bug

#764 — rtk gh pr list on a repo with zero PRs prints the "Pull Requests" header with no entries, giving no indication the list is actually empty.

Fix

Early-return with No Pull Requests (or No PRs in ultra-compact mode) when the parsed JSON array is empty.

Follows the same pattern as the existing output: the message is both printed to stdout and tracked in the filtered string for telemetry.

Testing

Tested against a repo with no open PRs:

# Before
$ rtk gh pr list --repo <no-prs-repo>
Pull Requests

# After
$ rtk gh pr list --repo <no-prs-repo>
No Pull Requests

Happy to address any feedback.

Greetings, saschabuehrle

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[pszymkowiak]

[w] wshm · Automated triage by AI

📊 Automated PR Analysis

🐛 Type	bug-fix
🟢 Risk	low

Summary

Fixes the empty PR list output for rtk gh pr list by adding an early return that prints 'No Pull Requests' (or 'No PRs' in ultra-compact mode) when the parsed JSON array is empty. Previously, only the header was printed with no indication that there were no PRs.

Review Checklist

• Tests present
• Breaking change
• Docs updated

Linked issues: #764

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Analyzed automatically by wshm · This is an automated analysis, not a human review.

[aeppling]

Hello ! Please target develop branch and read CONTRIBUTING.md so you can pass all check.

Thanks for the contribution, should be quickly merge then

[saschabuehrle]

Closing to retarget against develop — will reopen with the correct base branch.

Greetings, saschabuehrle

[saschabuehrle]

Retargeted to develop as PR #779. Also signed the CLA.

Greetings, saschabuehrle