fix: fix tree key ts type

[yoyo837]

🤔 This is a ...

• New feature
• Bug fix
• Site / document update
• Component style update
• TypeScript definition update
• Refactoring
• Code style optimization
• Test Case
• Branch merge
• Other (about what?)

🔗 Related issue link

close #23335

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	ts type upgrade
🇨🇳 Chinese	更新tree类型 ts定义

☑️ 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
• TypeScript definition is updated/provided or not needed
• Changelog is provided or not needed

[tests-checker]

Could you please add tests to make sure this change works as expected?

[ant-design-bot]

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[codecov]

Codecov Report

Merging #23348 into master will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master   #23348   +/-   ##
=======================================
  Coverage   98.36%   98.36%           
=======================================
  Files         364      364           
  Lines        7279     7279           
  Branches     1983     1993   +10     
=======================================
  Hits         7160     7160           
  Misses        119      119           

Impacted Files	Coverage Δ
components/tree/DirectoryTree.tsx	97.89% <ø> (ø)
components/tree/Tree.tsx	100.00% <ø> (ø)
components/tree/utils/dictUtil.ts	95.12% <100.00%> (ø)

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[yoyo837]

本地jest有问题！😒