feat(comp:tree-select): support searchPlaceholder and spin

[danranVm]

PR Checklist

Please check if your PR fulfills the following requirements:

• 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?

What is the new behavior?

• tree-select: 新增 searchPlaceholder 和 spin 配置
• cascader: 新增 searchPlaceholder 配置

Other information

[idux-bot]

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[codecov]

Codecov Report

Merging #1617 (d671b46) into main (fdda882) will decrease coverage by 0.01%.
Report is 6 commits behind head on main.
The diff coverage is 65.21%.

❗ Current head d671b46 differs from pull request most recent head 38cda25. Consider uploading reports for the commit 38cda25 to get more accurate results

@@            Coverage Diff             @@
##             main    #1617      +/-   ##
==========================================
- Coverage   92.56%   92.55%   -0.01%     
==========================================
  Files         338      338              
  Lines       31542    31559      +17     
  Branches     3602     3605       +3     
==========================================
+ Hits        29198    29211      +13     
- Misses       2344     2348       +4     

Files Changed	Coverage Δ
packages/pro/search/src/ProSearch.tsx	19.60% <0.00%> (-0.24%)	⬇️
packages/components/cascader/src/Cascader.tsx	83.87% <50.00%> (-0.39%)	⬇️
packages/components/cascader/src/types.ts	100.00% <100.00%> (ø)
packages/components/tree-select/src/TreeSelect.tsx	95.67% <100.00%> (+0.19%)	⬆️
packages/components/tree-select/src/types.ts	99.38% <100.00%> (+0.01%)	⬆️