refactor: merge next to master

[vthinkxie]

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
[ ] 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

[codecov]

Codecov Report

Merging #2563 into next will increase coverage by <.01%.
The diff coverage is 94.76%.

@@            Coverage Diff            @@
##             next   #2563      +/-   ##
=========================================
+ Coverage   95.49%   95.5%   +<.01%     
=========================================
  Files         495     495              
  Lines       12087   12098      +11     
  Branches     1688    1689       +1     
=========================================
+ Hits        11543   11554      +11     
  Misses        172     172              
  Partials      372     372

Impacted Files	Coverage Δ
components/drawer/nz-drawer-ref.ts	100% <ø> (ø)	⬆️
components/mention/nz-mention-trigger.ts	100% <ø> (ø)	⬆️
components/core/util/logger/logger.module.ts	100% <ø> (ø)	⬆️
components/mention/nz-mention-suggestions.ts	100% <ø> (ø)	⬆️
components/skeleton/nz-skeleton.module.ts	100% <ø> (ø)	⬆️
components/progress/nz-progress.component.ts	96.89% <100%> (ø)	⬆️
components/list/nz-list-item.component.ts	100% <100%> (ø)	⬆️
components/list/nz-list-item-meta.component.ts	100% <100%> (ø)	⬆️
components/tabs/nz-tab.component.ts	100% <100%> (ø)	⬆️
components/layout/nz-header.component.ts	100% <100%> (ø)	⬆️
... and 190 more

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