clean up CrossPlatformLock

[aelam]

Pull Request Description

Summary

Type of Change

• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 📚 Documentation update
• 🧹 Code cleanup/refactoring
• 🔧 Build/CI changes

Changes Made

Related Issues

Testing

• New tests added for new functionality
• All existing tests pass
• Manual testing completed

Screenshots/Recordings

Checklist

• Code follows the project's style guidelines
• Self-review of the code has been performed
• Code has been commented, particularly in hard-to-understand areas
• Corresponding documentation has been updated
• Changes generate no new warnings
• Any dependent changes have been merged and published

Additional Notes

[codecov]

Codecov Report

❌ Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 35.62%. Comparing base (b1c7082) to head (17eb817).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
Sources/Support/CrossPlatformLock.swift	0.00%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #119      +/-   ##
==========================================
+ Coverage   35.59%   35.62%   +0.02%     
==========================================
  Files         143      143              
  Lines        7675     7675              
==========================================
+ Hits         2732     2734       +2     
+ Misses       4943     4941       -2     

☔ 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.