fix(module: cascader): wrong placement and selected node order

[ElderJames]

🤔 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

fixed #4261

💡 Background and solution

📝 Changelog

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🇺🇸 English
🇨🇳 Chinese

☑️ 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

Attention: Patch coverage is 9.09091% with 10 lines in your changes missing coverage. Please review.

Project coverage is 42.25%. Comparing base (aea640c) to head (cd1287c).
Report is 4 commits behind head on master.

Files with missing lines	Patch %	Lines
components/cascader/Cascader.razor.cs	9.09%	10 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4265      +/-   ##
==========================================
+ Coverage   42.22%   42.25%   +0.03%     
==========================================
  Files         590      592       +2     
  Lines       31082    31094      +12     
  Branches     6010     6012       +2     
==========================================
+ Hits        13123    13138      +15     
- Misses      16850    16854       +4     
+ Partials     1109     1102       -7     

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