feat(datepicker): make '(navigate)' event cancellable

[maxokorokov]

Closes #2913

[codecov-io]

Codecov Report

Merging #3044 into master will increase coverage by 0.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #3044      +/-   ##
==========================================
+ Coverage   92.43%   92.45%   +0.01%     
==========================================
  Files          91       91              
  Lines        2962     2968       +6     
  Branches      474      475       +1     
==========================================
+ Hits         2738     2744       +6     
  Misses        163      163              
  Partials       61       61

Flag	Coverage Δ
#e2e	60% <60%> (-0.06%)	⬇️
#unit	90.99% <100%> (+0.01%)	⬆️

Impacted Files	Coverage Δ
src/datepicker/datepicker-input.ts	97.1% <100%> (ø)	⬆️
src/datepicker/datepicker-service.ts	97.7% <100%> (+0.01%)	⬆️
src/datepicker/datepicker.ts	98.97% <100%> (+0.05%)	⬆️

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