Booking: change color of disabled days in datepicker

[GVodyanov]

Fix #6521

Before	After

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.

Project coverage is 22.88%. Comparing base (8ccce9d) to head (727baf8).
Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
src/views/Appointments/Booking.vue	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #6845   +/-   ##
=========================================
  Coverage     22.88%   22.88%           
  Complexity      476      476           
=========================================
  Files           252      252           
  Lines         12305    12305           
  Branches       2364     2365    +1     
=========================================
  Hits           2816     2816           
  Misses         9141     9141           
  Partials        348      348           

Flag	Coverage Δ
javascript	14.54% <0.00%> (ø)
php	59.33% <ø> (ø)

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[nimishavijay]

Definitely looks great in dark mode! The disabled dates stand out more than the available dates in light mode though. Could we try using background-dark instead of background-darker, and change the text color of the available dates to main-text? That could help make them stand out more.

Hadn't noticed the disabled days getting a background too 😅

Should be all good now!

[st3iny]

Tested and works.

[st3iny]

/backport to stable5.2