fix(module:drawer): don't prevent events when nzMask is false

[hsuanxyz]

close #5350

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: #5350

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 #5438 into master will decrease coverage by 0.13%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #5438      +/-   ##
==========================================
- Coverage   91.34%   91.20%   -0.14%     
==========================================
  Files         551      453      -98     
  Lines       13950    13877      -73     
  Branches     2111     2129      +18     
==========================================
- Hits        12742    12656      -86     
- Misses        717      722       +5     
- Partials      491      499       +8     

Impacted Files	Coverage Δ
components/drawer/drawer.component.ts	97.82% <ø> (ø)
components/table/src/cell/th-measure.directive.ts	61.11% <0.00%> (-26.39%)	⬇️
components/radio/radio.service.ts	84.61% <0.00%> (-15.39%)	⬇️
...omponents/table/src/cell/th-selection.component.ts	56.00% <0.00%> (-9.00%)	⬇️
components/table/src/table-data.service.ts	75.38% <0.00%> (-5.87%)	⬇️
components/input/input.directive.ts	96.15% <0.00%> (-3.85%)	⬇️
components/radio/radio.component.ts	93.93% <0.00%> (-3.08%)	⬇️
components/radio/radio-group.component.ts	97.43% <0.00%> (-2.57%)	⬇️
components/select/select.component.ts	87.79% <0.00%> (-2.38%)	⬇️
components/table/src/table-style.service.ts	94.82% <0.00%> (-1.40%)	⬇️
... and 140 more

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