fix(module:select): disabled allows to open panel

[wenqi73]

close #6005
close #6007

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]

This preview will be available after the AzureCI is passed.

[codecov]

Codecov Report

Merging #6008 into master will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #6008      +/-   ##
==========================================
+ Coverage   89.95%   89.97%   +0.01%     
==========================================
  Files         465      465              
  Lines       14044    14042       -2     
  Branches     2307     2306       -1     
==========================================
+ Hits        12633    12634       +1     
+ Misses        863      862       -1     
+ Partials      548      546       -2     

Impacted Files	Coverage Δ
components/select/select-top-control.component.ts	89.28% <ø> (+0.39%)	⬆️
components/select/select.component.ts	87.70% <100.00%> (+0.16%)	⬆️
components/core/util/text-measure.ts	91.30% <0.00%> (+1.73%)	⬆️

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