feat(pro:search): search btn triggers search change now

[sallerli1]

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?

搜索图标点击不会触发搜索值修改，仅触发onSearch事件

What is the new behavior?

搜索图标点击先触发搜索值修改，再触发onSearch事件

Other information

业务线需求

[idux-bot]

This preview will be available after the AzureCI is passed.

[codecov]

Codecov Report

Merging #1321 (0ba1799) into main (84d0e66) will decrease coverage by 0.11%.
The diff coverage is 17.85%.

@@            Coverage Diff             @@
##             main    #1321      +/-   ##
==========================================
- Coverage   93.09%   92.97%   -0.12%     
==========================================
  Files         323      322       -1     
  Lines       29896    29666     -230     
  Branches     2465     2461       -4     
==========================================
- Hits        27832    27583     -249     
- Misses       2064     2083      +19     

Impacted Files	Coverage Δ
packages/pro/search/src/ProSearch.tsx	16.41% <11.53%> (-0.81%)	⬇️
packages/pro/search/src/token.ts	100.00% <100.00%> (ø)

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.