fix(form:autocomplete): fix can't be set default value

[cipchk]

• close sf 组件 ，email格式默认值无法填充 ng-alain#2161

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?

[x] 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
[x] No

Other information

[codecov]

Codecov Report

Merging #1406 (7a81de7) into master (1c15596) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head 7a81de7 differs from pull request most recent head dc653fa. Consider uploading reports for the commit dc653fa to get more accurate results

@@            Coverage Diff             @@
##           master    #1406      +/-   ##
==========================================
- Coverage   95.89%   95.89%   -0.01%     
==========================================
  Files         272      272              
  Lines        8354     8352       -2     
  Branches     1646     1645       -1     
==========================================
- Hits         8011     8009       -2     
  Misses        157      157              
  Partials      186      186              

Impacted Files	Coverage Δ
...rm/src/widgets/autocomplete/autocomplete.widget.ts	98.07% <100.00%> (-0.08%)	⬇️

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