fix(pro:search): click is correct when key is zero

[threedayAAAAA]

fix #1746

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?

searchFileds的key值是0或false，第一次点击选项会清空，第二次点击才能选中

What is the new behavior?

searchFileds的key值是0或false能选中

Other information

[idux-bot]

This preview will be available after the AzureCI is passed.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (3692447) 92.31% compared to head (cd86f72) 92.31%.
Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1748      +/-   ##
==========================================
- Coverage   92.31%   92.31%   -0.01%     
==========================================
  Files         346      346              
  Lines       32786    32794       +8     
  Branches     3709     3710       +1     
==========================================
+ Hits        30268    30274       +6     
- Misses       2518     2520       +2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.