fix(module: tree): sync checked node status and push to checkedNodeList

[simplejason]

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: #1802

What is the new behavior?

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[codecov]

Codecov Report

Merging #1809 into master will increase coverage by 0.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1809      +/-   ##
==========================================
+ Coverage   96.07%   96.09%   +0.01%     
==========================================
  Files         466      466              
  Lines       11173    11180       +7     
  Branches     1461     1463       +2     
==========================================
+ Hits        10735    10743       +8     
  Misses        126      126              
+ Partials      312      311       -1

Impacted Files	Coverage Δ
components/tree/nz-tree-node.component.ts	94.59% <100%> (+0.21%)	⬆️
components/tree/nz-tree.service.ts	95.67% <0%> (+0.48%)	⬆️

---

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 61dc87b...5aac9e6. Read the comment docs.