feat(module:tree,tree-select): expand [selectable:false] or [disableCheckbox:true] node when click

[huangxiuqi]

Close #3157

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
[x] 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: #3157

What is the new behavior?

Expand this node if the clicked node has a [disableCheckbox:true] or [selectable:false] attribute

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[netlify]

Deploy preview for ng-zorro-master ready!

Built with commit 78f5727

https://deploy-preview-3399--ng-zorro-master.netlify.com

[codecov]

Codecov Report

Merging #3399 into master will decrease coverage by 1.98%.
The diff coverage is 42.85%.

@@            Coverage Diff             @@
##           master    #3399      +/-   ##
==========================================
- Coverage   97.44%   95.45%   -1.99%     
==========================================
  Files         609      609              
  Lines       11947    13193    +1246     
  Branches      871     1804     +933     
==========================================
+ Hits        11642    12594     +952     
- Misses        196      218      +22     
- Partials      109      381     +272

Impacted Files	Coverage Δ
components/tree-select/nz-tree-select.component.ts	99.04% <100%> (-0.43%)	⬇️
components/tree/nz-tree-node.component.ts	93.1% <20%> (-4.03%)	⬇️
components/core/util/scroll-into-view-if-needed.ts	50% <0%> (-16.67%)	⬇️
components/core/logger/logger.service.ts	56.52% <0%> (-15.71%)	⬇️
components/core/addon/string_template_outlet.ts	88% <0%> (-12%)	⬇️
components/core/util/getMentions.ts	50% <0%> (-10%)	⬇️
components/statistic/nz-countdown.component.ts	84.21% <0%> (-9.54%)	⬇️
components/core/wave/nz-wave-renderer.ts	87.87% <0%> (-8.55%)	⬇️
...date-picker/lib/calendar/today-button.component.ts	91.66% <0%> (-8.34%)	⬇️
components/message/nz-message.component.ts	89.79% <0%> (-7.83%)	⬇️
... and 219 more

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