feat: Tree support accessibility & keyboard

[zombieJ]

🤔 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

💡 Background and solution

📝 Changelog

Language	Changelog
🇺🇸 English	Tree support accessibility & keyboard
🇨🇳 Chinese

☑️ Self Check before Merge

• 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

Preview

https://deploy-preview-18866--ant-design.netlify.com/components/tree-cn/#header

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Built with commit c94e568

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[codecov]

Codecov Report

Merging #18866 into 4.0-prepare will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           4.0-prepare   #18866   +/-   ##
============================================
  Coverage        96.87%   96.87%           
============================================
  Files              281      281           
  Lines             7325     7325           
  Branches          2013     2027   +14     
============================================
  Hits              7096     7096           
  Misses             227      227           
  Partials             2        2

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