fix: Multiple selector with customize tag not match the key of item

[zombieJ]

fix ant-design/ant-design#36112

[vercel]

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Name	Status	Preview	Updated
select	✅ Ready (Inspect)	Visit Preview	Jun 21, 2022 at 3:30AM (UTC)

[codecov]

Codecov Report

Merging #782 (cfc7d5d) into master (746c570) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head cfc7d5d differs from pull request most recent head b8a9f78. Consider uploading reports for the commit b8a9f78 to get more accurate results

@@           Coverage Diff           @@
##           master     #782   +/-   ##
=======================================
  Coverage   99.51%   99.51%           
=======================================
  Files          25       25           
  Lines        1021     1023    +2     
  Branches      323      324    +1     
=======================================
+ Hits         1016     1018    +2     
  Misses          4        4           
  Partials        1        1           

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

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