fix(menu): fix custom expand icon cannot be hidden

[Wxh16144]

[中文版模板 / Chinese template]

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🔗 Related issue link

fixed #40041

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	fix <Menu /> custom expand icon cannot be hidden
🇨🇳 Chinese	修复 <Menu /> 自定义展开图标无法隐藏的错误

☑️ Self-Check before Merge

⚠️ Please check all items below before requesting a reviewing. ⚠️

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
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[github-actions]

[codecov]

Codecov Report

Base: 100.00% // Head: 100.00% // No change to project coverage 👍

Coverage data is based on head (c2705d1) compared to base (0dc7815).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff            @@
##            master    #40071   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          603       603           
  Lines        10229     10230    +1     
  Branches      2731      2731           
=========================================
+ Hits         10229     10230    +1     

Impacted Files	Coverage Δ
components/menu/style/vertical.tsx	100.00% <ø> (ø)
components/menu/menu.tsx	100.00% <100.00%> (ø)
components/cascader/style/index.ts	100.00% <0.00%> (ø)

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[zombieJ]

这个还是 fix custom expand icon cannot be hidden 么？不是 className 丢失的问题么？

[Wxh16144]

这个还是 fix custom expand icon cannot be hidden 么？不是 className 丢失的问题么？

classname 丢失不是bug，这个pr还是修复 #40041 的