[improvement] TreeSelect: rename event name

[chenjiahan]

No description provided.

[codecov-io]

Codecov Report

Merging #3892 into dev will increase coverage by 0.07%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##              dev    #3892      +/-   ##
==========================================
+ Coverage   93.28%   93.36%   +0.07%     
==========================================
  Files         129      129              
  Lines        2830     2832       +2     
  Branches      256      256              
==========================================
+ Hits         2640     2644       +4     
+ Misses        160      158       -2     
  Partials       30       30

Impacted Files	Coverage Δ
src/tree-select/index.tsx	100% <100%> (+14.28%)	⬆️

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