fix(module:slider): step can not click the problem

[OriginRing]

fix: #7817

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
[ ] No

Other information

[zorro-bot]

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[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (4e9f876) 91.70% compared to head (aec4f25) 91.71%.
Report is 2 commits behind head on master.

❗ Current head aec4f25 differs from pull request most recent head e4db2a1. Consider uploading reports for the commit e4db2a1 to get more accurate results

Files	Patch %	Lines
...nents/cron-expression/cron-expression.component.ts	80.00%	1 Missing ⚠️
components/menu/menu-group.component.ts	66.66%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7820      +/-   ##
==========================================
+ Coverage   91.70%   91.71%   +0.01%     
==========================================
  Files         517      517              
  Lines       17810    17808       -2     
  Branches     2730     2729       -1     
==========================================
  Hits        16332    16332              
+ Misses       1179     1178       -1     
+ Partials      299      298       -1     

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[Laffery]

close #7817