style: optimize input search style in rtl

[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 #23794

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	Optimize Input.Search style in RTL
🇨🇳 Chinese	优化 Input.Search RTL 样式

☑️ 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

[ant-design-bot]

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[codecov]

Codecov Report

Merging #23797 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #23797   +/-   ##
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  Coverage   98.54%   98.54%           
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  Files         364      364           
  Lines        7261     7261           
  Branches     2022     1974   -48     
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  Hits         7155     7155           
  Misses        106      106           

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