fix(module:back-top): fix more reliable scrolling listener

[cipchk]

• close nz-back-top组件，用鼠标滚轮快速滚动到容器顶部，返回页面顶部的操作按钮未消失 #7199

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: 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 #7208 (333e36a) into master (806f024) will decrease coverage by 0.00%.
The diff coverage is n/a.

❗ Current head 333e36a differs from pull request most recent head c4de1dc. Consider uploading reports for the commit c4de1dc to get more accurate results

@@            Coverage Diff             @@
##           master    #7208      +/-   ##
==========================================
- Coverage   91.73%   91.72%   -0.01%     
==========================================
  Files         486      486              
  Lines       15918    15918              
  Branches     2588     2588              
==========================================
- Hits        14602    14601       -1     
- Misses       1003     1004       +1     
  Partials      313      313              

Impacted Files	Coverage Δ
components/back-top/back-top.component.ts	90.90% <ø> (ø)
components/core/util/text-measure.ts	92.10% <0.00%> (-0.88%)	⬇️

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[hsuanxyz]

LGTM