fix(form): fix can't render due to inherited

[cipchk]

• close 动态表单Object对象类型的两个疑似Bug ng-alain#2375

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

[ng-alain-bot]

Preview is ready!

[codecov]

Codecov Report

Merging #1592 (9f67ed3) into master (113c686) will not change coverage.
The diff coverage is 100.00%.

❗ Current head 9f67ed3 differs from pull request most recent head e41bb2d. Consider uploading reports for the commit e41bb2d to get more accurate results

@@           Coverage Diff           @@
##           master    #1592   +/-   ##
=======================================
  Coverage   95.52%   95.52%           
=======================================
  Files         276      276           
  Lines        8497     8497           
  Branches     1660     1576   -84     
=======================================
  Hits         8117     8117           
  Misses        318      318           
  Partials       62       62           

Impacted Files	Coverage Δ
packages/form/src/model/form.property.ts	98.00% <100.00%> (ø)
packages/form/src/sf.component.ts	96.58% <100.00%> (ø)

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