fix(checkbox): prevent second click event from input

[yggg]

Please read and mark the following check list before creating a pull request:

• I read and followed the CONTRIBUTING.md guide.
• I read and followed the New Feature Checklist guide.

Short description of what this resolves:

[codecov]

Codecov Report

Merging #1835 into master will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1835      +/-   ##
==========================================
- Coverage   83.88%   83.87%   -0.02%     
==========================================
  Files         232      232              
  Lines        7595     7595              
  Branches      670      670              
==========================================
- Hits         6371     6370       -1     
- Misses       1026     1027       +1     
  Partials      198      198

Impacted Files	Coverage Δ
...rk/theme/components/checkbox/checkbox.component.ts	96.55% <ø> (-1.73%)	⬇️