feat: ConfigProvider support variant

[MadCcc]

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
• Workflow
• Other (about what?)

🔗 Related issue link

resolve #49514

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	ConfigProvider support prop variant.
🇨🇳 Chinese	ConfigProvider 支持全局配置 variant。

☑️ 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
• Changelog is provided or not needed

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[github-actions]

[github-actions]

👁 Visual Regression Report for PR #49535 Passed ✅

🎯 Target branch: feature (ff12f47)
📖 View Full Report ↗︎

🎊 Congrats! No visual-regression diff found.

[github-actions]

size-limit report 📦

Path	Size
./dist/antd.min.js	341.11 KB (+279 B 🔺)
./dist/antd-with-locales.min.js	390.79 KB (-115 B 🔽)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.99%. Comparing base (5a00707) to head (d361509).
Report is 12 commits behind head on feature.

Additional details and impacted files

@@             Coverage Diff             @@
##           feature   #49535      +/-   ##
===========================================
- Coverage    99.99%   99.99%   -0.01%     
===========================================
  Files          748      748              
  Lines        13115    13051      -64     
  Branches      3445     3418      -27     
===========================================
- Hits         13114    13050      -64     
  Misses           1        1              

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