fix(comp: select): search error when group exists

[liuzaijiang]

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

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Component style update
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Application (the showcase website) / infrastructure changes
• Other... Please describe:

What is the current behavior?

当存在分组情况时，搜索分组标题

What is the new behavior?

Other information

修复输入时，样式抖动

[idux-bot]

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[codecov]

Codecov Report

Merging #908 (101f0f4) into main (e9bb42b) will decrease coverage by 0.07%.
The diff coverage is 60.95%.

❗ Current head 101f0f4 differs from pull request most recent head e34542e. Consider uploading reports for the commit e34542e to get more accurate results

@@            Coverage Diff             @@
##             main     #908      +/-   ##
==========================================
- Coverage   93.55%   93.47%   -0.08%     
==========================================
  Files         673      674       +1     
  Lines       66281    66414     +133     
  Branches     7910     7916       +6     
==========================================
+ Hits        62006    62082      +76     
- Misses       4275     4332      +57     

Impacted Files	Coverage Δ
...vate/time-panel/src/composables/useColumnEvents.ts	36.78% <36.78%> (ø)
...onents/_private/time-panel/src/TimePanelColumn.tsx	96.87% <85.71%> (-3.13%)	⬇️
...te/time-panel/__tests__/timeSelectorColumn.spec.ts	100.00% <100.00%> (ø)
...mponents/_private/time-panel/src/TimePanelCell.tsx	100.00% <100.00%> (ø)
...ackages/components/select/__tests__/select.spec.ts	100.00% <100.00%> (ø)
...es/components/select/src/composables/useOptions.ts	97.74% <100.00%> (+0.10%)	⬆️
packages/components/select/src/types.ts	99.48% <100.00%> (ø)
packages/pro/tree/src/types.ts	100.00% <100.00%> (ø)

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