fix(comp:table): selection should not be emptied after dataSource change

[sallerli1]

PR Checklist

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• The commit message follows our guidelines
• Tests for the changes have been added/updated or not needed
• Docs and demo have been added/updated or not needed

What is the current behavior?

表格在dataSource改变后（远程搜索或分页的场景），原本选中的项目被清空了

What is the new behavior?

修改以上问题

Other information

在 useTreeCheckState 中，每当选中的key变化后，缓存当前选中的数据，避免在下次处理选中项时数据不存在

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.77%. Comparing base (2511d1a) to head (bd150bb).

❗ Current head bd150bb differs from pull request most recent head 7d6c9af

Please upload reports for the commit 7d6c9af to get more accurate results.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1938      +/-   ##
==========================================
- Coverage   90.79%   90.77%   -0.02%     
==========================================
  Files         360      360              
  Lines       35484    35526      +42     
  Branches     2835     2839       +4     
==========================================
+ Hits        32216    32250      +34     
- Misses       3268     3276       +8     

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