fix(form:widget:array): fix error remove notify

[cipchk]

• close sf array 删除记录异常 ng-alain#2470

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

[cipchk]

Preview is ready!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (9841a69) 93.70% compared to head (2fa5db2) 93.70%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1758   +/-   ##
=======================================
  Coverage   93.70%   93.70%           
=======================================
  Files         316      316           
  Lines        8781     8782    +1     
  Branches     1644     1644           
=======================================
+ Hits         8228     8229    +1     
  Misses        491      491           
  Partials       62       62           

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