feat(pr-agent): Expand i18n detection with more file patterns

[finxo]

Pull Request

📝 Summary

This pull request enhances the PR agent's ability to detect internationalization (i18n) changes by expanding the list of recognized file patterns. This improvement ensures more accurate identification of localization-related PRs across a wider variety of platforms and frameworks, including iOS, Flutter, Java, and .NET.

🔧 Changes Made

• Expanded the i18n_patterns list within the _is_i18n_change method.
• Added detection for iOS (localizable.strings, .stringsdict), Flutter (.arb), Java (.properties), and .NET (.resx) localization files.
• Included common i18n configuration files (i18n.json, etc.) and other pattern variations like .pot and /locale/.

🧪 Testing

• Unit tests added/updated
• Integration tests added/updated
• Manual testing performed
• All tests passing

✅ Checklist

• My code follows the project's style guidelines
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published