fix(module:select): fix virtual scroll hover bug

[vthinkxie]

close #5120 close #5116

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]

This preview will be available after the AzureCI is passed.

[codecov]

Codecov Report

Merging #5131 into master will increase coverage by 0.00%.
The diff coverage is 88.88%.

@@           Coverage Diff           @@
##           master    #5131   +/-   ##
=======================================
  Coverage   91.42%   91.42%           
=======================================
  Files         547      547           
  Lines       13754    13755    +1     
  Branches     2132     2132           
=======================================
+ Hits        12574    12575    +1     
  Misses        714      714           
  Partials      466      466           

Impacted Files	Coverage Δ
components/select/select.component.ts	90.53% <ø> (-0.08%)	⬇️
components/select/option-container.component.ts	91.66% <88.88%> (+0.75%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 83cdc84...d241123. Read the comment docs.