style(table): Modify borderRadius in filter dropdown

[Yuiai01]

[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
• Refactoring
• Code style optimization
• Test Case
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🔗 Related issue link

close #42444

💡 Background and solution

由于外层存在 border-radius 因此使用最外层的 border-radius。

📝 Changelog

Language	Changelog
🇺🇸 English	Modify border-radius in filter dropdown
🇨🇳 Chinese	修改筛选下拉菜单的 border-radius

☑️ 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
• Changelog is provided or not needed

---

🚀 Summary

🤖 Generated by Copilot at 282d416

Fix filter dropdown overflow bug and improve filter style in filter.ts. Refactor import order and border radius for better code quality and consistency.

🔍 Walkthrough

🤖 Generated by Copilot at 282d416

• Fix filter dropdown overflow and border radius issues in table component (link, link)
• Reorder import of resetComponent function to follow code style convention (link)

[github-actions]

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (d90c1c6) 100.00% compared to head (72d2fa3) 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##            master    #42451   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          640       640           
  Lines        10941     10843   -98     
  Branches      2986      2945   -41     
=========================================
- Hits         10941     10843   -98     

Impacted Files	Coverage Δ
components/table/style/filter.ts	100.00% <ø> (ø)

... and 4 files with indirect coverage changes

☔ View full report in Codecov by Sentry.
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