feat: migrate less to token for Message

[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
• Workflow
• Other (about what?)

🔗 Related issue link

• [Theme] V4 Component Token Migration #41884

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	migrate less to token for Message
🇨🇳 Chinese	迁移 Message 组件的 less token

☑️ 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

---

🚀 Summary

🤖 Generated by Copilot at eba4ebe

Refactored the style tokens for the Message component and updated the documentation for migrating less variables to component tokens. This makes the Message component more consistent and easier to customize.

🔍 Walkthrough

🤖 Generated by Copilot at eba4ebe

• Move common message tokens to ComponentToken interface (link)
• Remove redundant messageNoticeContentPadding token from mergeToken function (link)
• Add messageNoticeContentBg and messageNoticeContentPadding tokens to genMessageStyle function to generate CSS style for message components (link)
• Update documentation for migrating less variables to component tokens for Message component, listing the mapping and notes for the tokens (link, link)

[github-actions]

[github-actions]

size-limit report 📦

Path	Size
./dist/antd.min.js	376.75 KB (+10 B 🔺)
./dist/antd-with-locales.min.js	435.68 KB (+9 B 🔺)

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (4a4eae5) 100.00% compared to head (57afc13) 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##           feature    #42080   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          619       619           
  Lines        10581     10581           
  Branches      2890      2890           
=========================================
  Hits         10581     10581           

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