perf(module:select): avoid reflow when select init

[vthinkxie]

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: 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

Merging #6452 (80f53de) into master (4d80873) will increase coverage by 0.00%.
The diff coverage is 85.71%.

@@           Coverage Diff           @@
##           master    #6452   +/-   ##
=======================================
  Coverage   89.83%   89.83%           
=======================================
  Files         478      478           
  Lines       15314    15314           
  Branches     2475     2475           
=======================================
+ Hits        13757    13758    +1     
+ Misses        940      939    -1     
  Partials      617      617           

Impacted Files	Coverage Δ
components/core/animation/zoom.ts	100.00% <ø> (ø)
components/date-picker/date-picker.component.ts	93.42% <ø> (ø)
components/tree-select/tree-select.component.ts	88.84% <66.66%> (-0.43%)	⬇️
components/select/select.component.ts	87.58% <85.71%> (-0.29%)	⬇️
components/date-picker/picker.component.ts	89.88% <100.00%> (ø)
components/select/select-search.component.ts	87.50% <100.00%> (+0.26%)	⬆️
components/select/select-top-control.component.ts	89.15% <100.00%> (-0.26%)	⬇️
components/time-picker/time-picker.component.ts	86.20% <100.00%> (+0.09%)	⬆️
components/tabs/tab-nav-bar.component.ts	83.09% <0.00%> (+0.70%)	⬆️
components/time-picker/time-holder.ts	95.78% <0.00%> (+1.05%)	⬆️

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