fix: fix #21103 update clearfix mixin

[morenyang]

Refs: https://github.com/twbs/bootstrap/blob/ff29c1224c20b8fcf2d1e7c28426470f1dc3e40d/scss/mixins/_clearfix.scss

🤔 This is a ...

• New feature
• Bug fix
• Site / document update
• Component style update
• TypeScript definition update
• Refactoring
• Code style optimization
• Test Case
• Branch merge
• Other (about what?)

🔗 Related issue link

close #21103

💡 Background and solution

Follow bootstrap's clearfix solution.

📝 Changelog

Language	Changelog
🇺🇸 English	Update clearfix mixin.
🇨🇳 Chinese

☑️ Self Check before Merge

• 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

[ant-design-bot]

[codesandbox-ci]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

Latest deployment of this branch, based on commit 4cd1bec:

Sandbox	Source
antd reproduction template	Configuration

[codecov]

Codecov Report

Merging #21109 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #21109   +/-   ##
=======================================
  Coverage   97.48%   97.48%           
=======================================
  Files         296      296           
  Lines        6911     6911           
  Branches     1918     1907   -11     
=======================================
  Hits         6737     6737           
  Misses        174      174

---

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 3ee4d82...4cd1bec. Read the comment docs.

[afc163]

breaks #21864