fix(module:tabs): prevent incorrect scroll offset on tab focus

[xiayu1996]

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: #9054

What is the new behavior?

Modify NzTabNavItemDirective's focus function to prevent the auto-scroll that makes the incorrect offset of NzTabNavBarComponent

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

All modified and coverable lines are covered by tests ✅

Project coverage is 92.11%. Comparing base (9198941) to head (1ec8d92).
Report is 5 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #9186   +/-   ##
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  Coverage   92.11%   92.11%           
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  Files         561      561           
  Lines       19989    19989           
  Branches     3009     3009           
=======================================
  Hits        18413    18413           
  Misses       1236     1236           
  Partials      340      340           

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[HyperLife1119]

LGTM