fix(module:button): prevent default event fire

[chenc041]

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: #7264

What is the new behavior?

When the button state is loading or disabled, the default event will not fire

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 #7267 (be3bf81) into master (0a62944) will increase coverage by 0.06%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##           master    #7267      +/-   ##
==========================================
+ Coverage   91.68%   91.75%   +0.06%     
==========================================
  Files         486      486              
  Lines       15920    15950      +30     
  Branches     2588     2591       +3     
==========================================
+ Hits        14597    14635      +38     
+ Misses       1011     1003       -8     
  Partials      312      312              

Impacted Files	Coverage Δ
components/button/button.component.ts	98.57% <50.00%> (ø)
components/table/src/table-style.service.ts	94.82% <0.00%> (-1.73%)	⬇️
components/collapse/collapse.component.ts	94.59% <0.00%> (-0.41%)	⬇️
components/typography/text-edit.component.ts	95.45% <0.00%> (-0.11%)	⬇️
components/collapse/collapse-panel.component.ts	92.85% <0.00%> (+0.26%)	⬆️
components/table/src/cell/th-addon.component.ts	90.12% <0.00%> (+0.37%)	⬆️
components/select/select.component.ts	90.90% <0.00%> (+0.71%)	⬆️
components/back-top/back-top.component.ts	91.66% <0.00%> (+0.75%)	⬆️
...ts/table/src/table/table-inner-scroll.component.ts	83.82% <0.00%> (+4.41%)	⬆️
components/table/src/table/tbody.component.ts	100.00% <0.00%> (+11.11%)	⬆️
... and 1 more

---

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 0a62944...be3bf81. Read the comment docs.

[simplejason]

LGTM