feat: 是否在选中项后清空搜索框功能

[AILOVEU]

https://github.com/ant-design/ant-design/issues/34978

添加antd的Cascader组件在onSelect后，是否清除searchValue的功能

by：第一次PR，如有问题麻烦指出改正

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[codecov[bot]]

Codecov Report

Merging #271 (b951390) into master (a0efe2e) will increase coverage by 0.00%. The diff coverage is 100.00%.

:exclamation: Current head b951390 differs from pull request most recent head 755037e. Consider uploading reports for the commit 755037e to get more accurate results

@@           Coverage Diff           @@
##           master     #271   +/-   ##
=======================================
  Coverage   99.79%   99.80%           
=======================================
  Files          15       15           
  Lines         498      500    +2     
  Branches      129      131    +2     
=======================================
+ Hits          497      499    +2     
  Misses          1        1           

Impacted Files	Coverage Δ
src/Cascader.tsx	100.00% <100.00%> (ø)

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Name	Status	Preview	Updated
cascader	✅ Ready (Inspect)	Visit Preview	Apr 18, 2022 at 4:58AM (UTC)

[AHopes]

@afc163 请问下这个要更新到antd哪个版本可以支持？

[afc163]