fix: update tag default background

[kiner-tang]

[中文版模板 / Chinese template]

🤔 This is a ...

• New feature
• Bug fix
• Site / documentation update
• Demo update
• Component style update
• TypeScript definition update
• Bundle size optimization
• Performance optimization
• Enhancement feature
• Internationalization
• Refactoring
• Code style optimization
• Test Case
• Branch merge
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🔗 Related issue link

fix #45694

• fix: update tag default background #45700

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	update tag default background
🇨🇳 Chinese	修改标签的默认背景颜色

☑️ Self-Check before Merge

⚠️ Please check all items below before requesting a reviewing. ⚠️

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• TypeScript definition is updated/provided or not needed
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---

🚀 Summary

🤖 Generated by Copilot at 7b2b77e

Improved tag contrast and accessibility with TinyColor. Changed components/tag/style/index.ts to adjust tag background color based on text color.

🔍 Walkthrough

🤖 Generated by Copilot at 7b2b77e

• Adjust tag background color based on container background color using TinyColor library (link, link)

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[github-actions]

[github-actions]

size-limit report 📦

Path	Size
./dist/antd.min.js	400.78 KB (+34 B 🔺)
./dist/antd-with-locales.min.js	460.12 KB (+30 B 🔺)

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antd reproduction template (forked)	Configuration

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (c614e81) 100.00% compared to head (7b2b77e) 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##            master    #45711   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          700       700           
  Lines        11826     11826           
  Branches      3151      3151           
=========================================
  Hits         11826     11826           

Files	Coverage Δ
components/tag/style/index.ts	100.00% <ø> (ø)

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