fix(module:select): input field length restricted to 82px

[LemniscateX]

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?

Every input field in <Select/> component cannot extend its length to the rest of line, and that its length is limited to 82px.
Issue Number: #7556

What is the new behavior?

Input field in <Select/> component can stretch to what it should be(with max length equals the max length of the block).

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

This problem is introduced by fixing #6209 (which is merged in #6222), and the detailed bugtrace can be found in the comment below. 😂 lol

[zorro-bot]

This preview will be available after the AzureCI is passed.

[LemniscateX]

CI failed because of a type error in components/core/testing/component-bed.ts, which is in master branch, thus I couldn't decide to fix it myself or wait for remote changes 🧐

[simplejason]

please make sure npm run test works well in your local env :)

[codecov]

Codecov Report

Merging #7626 (c7fafcd) into master (2cb80fc) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #7626      +/-   ##
==========================================
- Coverage   92.02%   92.01%   -0.02%     
==========================================
  Files         502      502              
  Lines       16738    16738              
  Branches     2629     2629              
==========================================
- Hits        15403    15401       -2     
- Misses       1069     1070       +1     
- Partials      266      267       +1     

Impacted Files	Coverage Δ
components/select/select-search.component.ts	89.36% <100.00%> (ø)
components/tabs/tab-nav-bar.component.ts	87.94% <0.00%> (-0.71%)	⬇️

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[simplejason]

LGTM