chore: add jsDoc for cssVar calculator

[li-jia-nan]

• ref: Refactor Component Style to Adapt CSS Variables #45618

[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
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🔗 Related issue link

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	无需纳入ChangeLog
🇨🇳 Chinese	无需纳入ChangeLog

☑️ 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 8cefdeb

Added Chinese comments for AbstractCalculator methods in components/theme/util/calc/calculator.ts. Moved class declaration to follow comments.

🔍 Walkthrough

🤖 Generated by Copilot at 8cefdeb

• Add comments for abstract methods of AbstractCalculator class in Chinese (link)
• Move class declaration after comments and before export statement (link)

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[github-actions]

[github-actions]

size-limit report 📦

Path	Size
./dist/antd.min.js	403.77 KB
./dist/antd-with-locales.min.js	463.18 KB

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Build	Status	Details	Updated (UTC)
default (Inspect)	👍 Changes approved	1 change	Nov 12, 2023, 6:10 AM

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (047bc53) 100.00% compared to head (435f5ad) 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##           feature    #45809   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          706       706           
  Lines        12015     12015           
  Branches      3202      3202           
=========================================
  Hits         12015     12015           

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