fix: multi-dot markedDates containerOpacity

[vkupar]

So far it was impossible to set a day container opacity to multi-dot calendar

Now this will work, after providing - containerOpacity:

<Calendar
  markingType={'multi-dot'}
  markedDates={{
    '2023-12-25': {dots: [{key: 'vacation', color: 'red', selectedDotColor: 'blue'}], selectedColor: 'red', containerOpacity: 0.3},
  }}
/>;