Use commit statuses for UI test comments

[Kyle-Ye]

Summary

• Switch comment-triggered UI test reporting from Checks API to Commit Status API
• Publish stable contexts for UI Tests / iOS and UI Tests / macOS
• Keep same-repository protection for status updates

Validation

• ruby -e 'require "psych"; Psych.parse_file(".github/workflows/uitests.yml")'
• git diff --check origin/main..HEAD

Note: actionlint is not installed locally.

[augmentcode]

🤖 Augment PR Summary

Summary: This PR changes UI-test reporting triggered by PR comments from the Checks API to the Commit Status API.

Changes:

• Updates workflow permissions from checks: write to statuses: write
• Creates initial commit statuses for UI Tests / iOS and UI Tests / macOS when /uitest comments are received
• Updates those statuses during execution and sets final success/failure/error on completion
• Adds a status-enabled output to skip status updates for fork PRs (same-repo guard)

Technical Notes: Uses stable status contexts (per platform) so downstream tooling/branch protection can key off consistent names.

_{🤖 Was this summary useful? React with 👍 or 👎}

[augmentcode]

Review completed. 1 suggestion posted.

Comment augment review to trigger a new review at any time.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 25.81%. Comparing base (7371deb) to head (a858b1d).

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #867       +/-   ##
===========================================
+ Coverage   13.80%   25.81%   +12.00%     
===========================================
  Files         637      672       +35     
  Lines       41270    46453     +5183     
===========================================
+ Hits         5697    11990     +6293     
+ Misses      35573    34463     -1110     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.