feat(module: popconfirm): support async close

[rorry121]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/NG-ZORRO/ng-zorro-antd/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
[x] 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

[zorro-bot]

This preview will be available after the AzureCI is passed.

[codecov]

Codecov Report

Merging #7533 (071c266) into master (64b7389) will decrease coverage by 0.02%.
The diff coverage is 88.63%.

❗ Current head 071c266 differs from pull request most recent head b391aee. Consider uploading reports for the commit b391aee to get more accurate results

@@            Coverage Diff             @@
##           master    #7533      +/-   ##
==========================================
- Coverage   91.75%   91.72%   -0.03%     
==========================================
  Files         502      502              
  Lines       16699    16770      +71     
  Branches     2604     2759     +155     
==========================================
+ Hits        15322    15383      +61     
- Misses       1047     1053       +6     
- Partials      330      334       +4     

Impacted Files	Coverage Δ
components/anchor/anchor-link.component.ts	100.00% <ø> (ø)
components/badge/ribbon.component.ts	33.33% <ø> (ø)
components/core/animation/notification.ts	100.00% <ø> (ø)
components/core/config/config.ts	100.00% <ø> (ø)
components/notification/notification.component.ts	90.00% <66.66%> (-10.00%)	⬇️
...s/notification/notification-container.component.ts	93.67% <84.00%> (-4.61%)	⬇️
components/popconfirm/popconfirm.ts	96.70% <87.50%> (-2.00%)	⬇️
components/anchor/anchor.component.ts	97.47% <90.00%> (-1.57%)	⬇️
components/badge/badge-sup.component.ts	100.00% <100.00%> (ø)
components/badge/badge.component.ts	100.00% <100.00%> (ø)
... and 6 more

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[wzhudev]

Thanks for your PR!

[wzhudev]

L291-292 & L296-297 could be extracted to a function.

[rorry121]

updated！

[wzhudev]

LGTM