refactor: mentions cssinjs

[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
• Other (about what?)

🔗 Related issue link

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	Mentions support cssinjs
🇨🇳 Chinese	Mentions support cssinjs

☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

• 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

[github-actions]

[github-actions]

Size Change: -5.25 kB (-1%)

Total Size: 931 kB

Filename	Size	Change
./dist/antd-with-locales.min.js	397 kB	+4.16 kB (+1%)
./dist/antd.compact.min.css	47.3 kB	-3.4 kB (-7%)	✅
./dist/antd.dark.min.css	48.4 kB	-3.41 kB (-7%)	✅
./dist/antd.min.css	47.3 kB	-3.33 kB (-7%)	✅
./dist/antd.min.js	344 kB	+4.14 kB (+1%)
./dist/antd.variable.min.css	47.7 kB	-3.41 kB (-7%)	✅

_{compressed-size-action}

[codecov]

Codecov Report

Merging #34536 (f8ec0bb) into next (4f669b6) will not change coverage.
The diff coverage is 100.00%.

❗ Current head f8ec0bb differs from pull request most recent head 001c024. Consider uploading reports for the commit 001c024 to get more accurate results

@@            Coverage Diff            @@
##              next    #34536   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          431       433    +2     
  Lines         7975      7997   +22     
  Branches      2284      2284           
=========================================
+ Hits          7975      7997   +22     

Impacted Files	Coverage Δ
components/_util/theme/default.tsx	100.00% <ø> (ø)
components/_util/theme/index.tsx	100.00% <ø> (ø)
components/_util/theme/util/operationUnit.tsx	100.00% <100.00%> (ø)
components/badge/Ribbon.tsx	100.00% <100.00%> (ø)
components/badge/index.tsx	100.00% <100.00%> (ø)
components/mentions/index.tsx	100.00% <100.00%> (ø)
components/typography/Editable.tsx	100.00% <100.00%> (ø)
components/typography/Typography.tsx	100.00% <100.00%> (ø)
components/typography/style/mixins.tsx	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 4f669b6...001c024. Read the comment docs.

[zombieJ]

=> mentionsCls