fix: ansi HTML edge cases

[chenjiahan]

Summary

• Enhance the ansiHTML function to handle more ANSI color codes.
• Add more test cases for it.

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

[netlify]

✅ Deploy Preview for rsbuild ready!

Name	Link
🔨 Latest commit	7767ad3
🔍 Latest deploy log	https://app.netlify.com/sites/rsbuild/deploys/676dea63b88d110008308455
😎 Deploy Preview	https://deploy-preview-4279--rsbuild.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.
Lighthouse	1 paths audited Performance: 59 (🔴 down 14 from production) Accessibility: 97 (no change from production) Best Practices: 100 (no change from production) SEO: 100 (no change from production) PWA: 60 (no change from production) View the detailed breakdown and full score reports

---

To edit notification comments on pull requests, go to your Netlify site configuration.