fix: 修复 carousel dotposition 问题

[xrkffgg]

🤔 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 #20638

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	Fix the display error of carousel component with dotposition of left and righ
🇨🇳 Chinese	修复carousel 组件 dotposition 为 left 、right 的显示错误

☑️ 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

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[codecov]

Codecov Report

Merging #20645 into 4.0-prepare will increase coverage by <.01%.
The diff coverage is 100%.

@@               Coverage Diff               @@
##           4.0-prepare   #20645      +/-   ##
===============================================
+ Coverage        97.56%   97.56%   +<.01%     
===============================================
  Files              295      295              
  Lines             6819     6820       +1     
  Branches          1890     1891       +1     
===============================================
+ Hits              6653     6654       +1     
  Misses             166      166

Impacted Files	Coverage Δ
components/carousel/index.tsx	100% <100%> (ø)	⬆️

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