fix: submenu arrow transition

[JarvisArt]

[中文版模板 / Chinese template]

🤔 This is a ...

• New feature
• Bug fix
• Site / documentation update
• Demo update
• Component style update
• TypeScript definition update
• Bundle size optimization
• Performance optimization
• Enhancement feature
• Internationalization
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• Code style optimization
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🔗 Related issue link

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	Fixed submenu arrow transition
🇨🇳 Chinese	修复 submenu 箭头过渡

☑️ 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
• TypeScript definition is updated/provided or not needed
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[github-actions]

[JarvisArt]

[codecov]

Codecov Report

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

Coverage data is based on head (a89c2a0) compared to base (5d33813).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff            @@
##            master    #39945   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          603       603           
  Lines        10257     10257           
  Branches      2725      2725           
=========================================
  Hits         10257     10257           

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