fix(form:select): fix ignore reset option data when set onSearch

[cipchk]

• close select表单重置后无选项 ng-alain#2415

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/ng-alain/delon/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[ ] Feature
[ ] 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?

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

[ ] Yes
[ ] No

Other information

[ng-alain-bot]

Preview is ready!

[codecov]

Codecov Report

Merging #1644 (2829afc) into master (79e229f) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head 2829afc differs from pull request most recent head 8fd4da1. Consider uploading reports for the commit 8fd4da1 to get more accurate results

@@           Coverage Diff           @@
##           master    #1644   +/-   ##
=======================================
  Coverage   95.57%   95.57%           
=======================================
  Files         281      281           
  Lines        8740     8741    +1     
  Branches     1731     1732    +1     
=======================================
+ Hits         8353     8354    +1     
  Misses        319      319           
  Partials       68       68           

Files Changed	Coverage Δ
packages/form/src/widgets/select/select.widget.ts	96.29% <100.00%> (+0.06%)	⬆️