fix: MultipleSelect should inputable when first focus

[zombieJ]

resolve ant-design/ant-design#27999

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[codecov]

Codecov Report

Merging #571 (a24540e) into master (8edd430) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #571   +/-   ##
=======================================
  Coverage   99.27%   99.27%           
=======================================
  Files          20       20           
  Lines         961      966    +5     
  Branches      314      326   +12     
=======================================
+ Hits          954      959    +5     
  Misses          6        6           
  Partials        1        1           

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

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