Fix: no animation effect when the secondary menu is expanded and coll…

[wangj90]

…apsed

🤔 This is a ...

• New feature
• Bug fix
• Site / documentation update
• Demo update
• Component style update
• Bundle size optimization
• Performance optimization
• Refactoring
• Code style optimization
• Test Case
• Branch merge
• Other (about what?)

🔗 Related issue link

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	Fix the bug that the arrow of submenu has no animation effect when it is expanded and collapsed
🇨🇳 Chinese	修复二级菜单的箭头展开和折叠时没有动画效果的问题

☑️ 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
• Changelog is provided or not needed

[github-actions]

[codecov]

Codecov Report

Base: 43.17% // Head: 44.60% // Increases project coverage by +1.43% 🎉

Coverage data is based on head (6b45ee2) compared to base (e4834ed).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2876      +/-   ##
==========================================
+ Coverage   43.17%   44.60%   +1.43%     
==========================================
  Files         545      545              
  Lines       25783    25779       -4     
  Branches      261      261              
==========================================
+ Hits        11133    11500     +367     
+ Misses      14610    14239     -371     
  Partials       40       40              

Impacted Files	Coverage Δ
components/menu/SubMenu.razor.cs	73.46% <100.00%> (ø)
components/select/Select.razor.cs	53.18% <0.00%> (+0.26%)	⬆️
components/select/SelectBase.cs	71.19% <0.00%> (+0.27%)	⬆️
components/input/Input.cs	67.25% <0.00%> (+0.35%)	⬆️
components/date-picker/internal/DatePickerBase.cs	78.87% <0.00%> (+0.67%)	⬆️
components/core/CssSizeLength.cs	86.07% <0.00%> (+1.07%)	⬆️
components/grid/Col.razor.cs	96.00% <0.00%> (+1.33%)	⬆️
components/core/Extensions/JSRuntimeExtensions.cs	53.33% <0.00%> (+3.33%)	⬆️
components/grid/Row.razor.cs	84.44% <0.00%> (+8.88%)	⬆️
components/core/Base/AntInputComponentBase.cs	73.33% <0.00%> (+11.42%)	⬆️
... and 10 more

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