fix(module:date-picker): week number error when cross years

[Laffery]

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?

[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: #7916

What is the new behavior?

show week-number year rather than current year

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

close #7916

[zorro-bot]

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[codecov]

Codecov Report

Merging #7923 (0feeace) into master (59143d2) will decrease coverage by 0.01%.
The diff coverage is n/a.

❗ Current head 0feeace differs from pull request most recent head ebc4487. Consider uploading reports for the commit ebc4487 to get more accurate results

@@            Coverage Diff             @@
##           master    #7923      +/-   ##
==========================================
- Coverage   91.78%   91.78%   -0.01%     
==========================================
  Files         509      509              
  Lines       17444    17443       -1     
  Branches     2683     2771      +88     
==========================================
- Hits        16011    16010       -1     
  Misses       1134     1134              
  Partials      299      299              

Impacted Files	Coverage Δ
components/date-picker/date-picker.component.ts	94.61% <ø> (-0.02%)	⬇️