fix(module:tree-view): re-rendering fix for virtual-scroll-view

[oleksandr-codefresh]

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?

node.ts / hasContextShapeChanged function previously didn't allow customisation of how to compare data objects and did that by simple object link comparison.

Issue Number: N/A

What is the new behavior?

Now it will use treeControl.trackBy function to extract concreate key field from object (as user defined) and do it in proper and optimised way

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[codecov]

Codecov Report

Merging #8035 (de798bd) into master (fa0312a) will not change coverage.
The diff coverage is n/a.

❗ Current head de798bd differs from pull request most recent head 6fe9ea1. Consider uploading reports for the commit 6fe9ea1 to get more accurate results

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  Misses       1175     1175           
  Partials      298      298           

[oleksandr-codefresh]

@hsuanxyz Hi, pls review once it will be possible, thx)

[hsuanxyz]

LGTM, thanks.