fix(datepicker): fixed viewed date if min max is set

[valorkin]

if no date is selected and min or max dates are excluding current month
show minimal or maximal provided date

fixes #3123 fixes #2711

[codecov]

Codecov Report

Merging #3129 into development will decrease coverage by 0.08%.
The diff coverage is 29.41%.

@@               Coverage Diff               @@
##           development    #3129      +/-   ##
===============================================
- Coverage        65.31%   65.23%   -0.09%     
===============================================
  Files              209      209              
  Lines             5628     5635       +7     
  Branches           990      993       +3     
===============================================
  Hits              3676     3676              
- Misses            1689     1696       +7     
  Partials           263      263

Impacted Files	Coverage Δ
src/datepicker/reducer/bs-datepicker.reducer.ts	12.82% <29.41%> (-0.82%)	⬇️

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[YevheniiaMazur]

Tested, looks good