style: fix dropdown menu icon

[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

💡 Background and solution

补充 #21768

📝 Changelog

Language	Changelog
🇺🇸 English	Fixed Dropdown content and icons overlapping
🇨🇳 Chinese	修正 Dropdown 内容和图标重叠问题

☑️ 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

[yoyo837]

要不，背景写一下因为啥补充！？

[ant-design-bot]

[xrkffgg]

我写在 changelog 里了，话说我 @ 他，你怎么在一个 closed PR 发现啦

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[codecov]

Codecov Report

Merging #22098 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #22098   +/-   ##
=======================================
  Coverage   97.96%   97.96%           
=======================================
  Files         306      306           
  Lines        7041     7041           
  Branches     1928     1928           
=======================================
  Hits         6898     6898           
  Misses        143      143

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[codecov]

Codecov Report

Merging #22098 into master will not change coverage by %.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #22098   +/-   ##
=======================================
  Coverage   97.96%   97.96%           
=======================================
  Files         306      306           
  Lines        7041     7041           
  Branches     1928     1939   +11     
=======================================
  Hits         6898     6898           
  Misses        143      143           

---

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 33e726f...bebab64. Read the comment docs.

[yoyo837]

Watch repo anything activity.

[xrkffgg]

just 666

[afc163]

把这个优先级提起来：https://github.com/ant-design/ant-design/pull/21768/files#diff-1afa51859d202927a0eb117e03ac1413R192

不要改外面的 padding。

[xrkffgg]

等下，RTL 还有点问题