fix(module:tooltip): fix tooltip for deeply wrapped focusable elements

[wzhudev]

close #6955

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: #6955

Since focus and blur are events that don't propagate, nz-tooltip and other components such as nz-popconfirm and nz-popover fail to detect a focus event on a deeply wrapped child element.

What is the new behavior?

Use focusin and focusout events which can propagate and IE11-compatible instead. trigger="focus" works for deeply wrapped focusable child elements.

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[zorro-bot]

This preview will be available after the AzureCI is passed.

[codecov]

Codecov Report

Merging #6965 (ad77220) into master (cbbb9d0) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head ad77220 differs from pull request most recent head 7c5f249. Consider uploading reports for the commit 7c5f249 to get more accurate results

@@           Coverage Diff            @@
##           master    #6965    +/-   ##
========================================
  Coverage   89.53%   89.54%            
========================================
  Files         489      489            
  Lines       15805    15805            
  Branches     2428     2573   +145     
========================================
+ Hits        14151    14152     +1     
+ Misses       1014     1012     -2     
- Partials      640      641     +1     

Impacted Files	Coverage Δ
components/tooltip/base.ts	93.48% <100.00%> (ø)
components/tabs/tab-nav-bar.component.ts	83.03% <0.00%> (-0.71%)	⬇️
...ts/table/src/table/table-inner-scroll.component.ts	81.42% <0.00%> (+4.28%)	⬆️

---

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 cbbb9d0...7c5f249. Read the comment docs.

[vthinkxie]

LGTM