type: replace unknown with TooltipRef

[thinkasany]

[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
• Branch merge
• Workflow
• Other (about what?)

🔗 Related issue link

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	type: replace unknown with TooltipRef
🇨🇳 Chinese	替换unknown 成 TooltipRef

☑️ 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 97bf08b

Refactored Popconfirm component to use TooltipRef type and forward ref. This improves compatibility and reusability with Tooltip component.

🔍 Walkthrough

🤖 Generated by Copilot at 97bf08b

• Import and use TooltipRef type for Popconfirm component (link, link)

[stackblitz]

Run & review this pull request in StackBlitz Codeflow.

[github-actions]

[li-jia-nan]

PR body 要保留默认格式，有需要补充的信息可以填在里面，但是默认格式不要删掉

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (2cb72a7) 100.00% compared to head (97bf08b) 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##            master    #43452   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          648       648           
  Lines        10968     10968           
  Branches      2978      2978           
=========================================
  Hits         10968     10968           

Impacted Files	Coverage Δ
components/popconfirm/index.tsx	100.00% <100.00%> (ø)

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