chore(module:empty): refactor

[wzhudev]

feat(module:empty): add no description feature

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

[zorro-bot]

This preview will be available after the AzureCI is passed.

[codecov]

Codecov Report

Merging #4726 into master will increase coverage by 0.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #4726      +/-   ##
==========================================
+ Coverage   93.24%   93.26%   +0.01%     
==========================================
  Files         507      505       -2     
  Lines       12748    12734      -14     
  Branches     1958     1957       -1     
==========================================
- Hits        11887    11876      -11     
+ Misses        450      447       -3     
  Partials      411      411

Impacted Files	Coverage Δ
components/empty/empty.module.ts	100% <ø> (ø)
components/empty/partial/default.ts	100% <100%> (ø)
components/empty/config.ts	100% <100%> (ø)
components/empty/empty.component.ts	100% <100%> (ø)
components/empty/embed-empty.component.ts	96.07% <100%> (ø)
components/core/testing/componet-bed.ts	90.9% <100%> (ø)	⬆️
components/empty/partial/simple.ts	100% <100%> (ø)
components/ng-zorro-antd.module.ts
components/version/version.ts
components/upload/nz-upload.module.ts
... and 5 more

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[vthinkxie]

lgtm