perf(module:modal): do not run change detection when focusing element

[arturovt]

PR Checklist

• 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

[x] Refactoring (no functional changes, no api changes)

Does this PR introduce a breaking change?

[ ] Yes
[x] No

[zorro-bot]

This preview will be available after the AzureCI is passed.

[codecov]

Codecov Report

Merging #7070 (3467d8f) into master (d45f0ab) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #7070      +/-   ##
==========================================
- Coverage   89.57%   89.55%   -0.02%     
==========================================
  Files         488      488              
  Lines       15821    15822       +1     
  Branches     2440     2440              
==========================================
- Hits        14171    14169       -2     
- Misses       1009     1010       +1     
- Partials      641      643       +2     

Impacted Files	Coverage Δ
...ponents/modal/modal-confirm-container.component.ts	100.00% <100.00%> (ø)
components/modal/modal-container.component.ts	100.00% <100.00%> (ø)
components/modal/modal-container.ts	92.93% <100.00%> (+0.03%)	⬆️
components/time-picker/time-holder.ts	95.78% <0.00%> (-1.06%)	⬇️
components/tabs/tab-nav-bar.component.ts	82.26% <0.00%> (-0.71%)	⬇️

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[simplejason]

LGTM