Related to #5652, #5699 - necessary to unblock React 18 support

Checklist

• Includes tests
• Update documentation

Changes proposed in this pull request:

Add new "v3" variant of DateRangePicker which uses react-day-picker v8.

Implementation notes:

• our custom disabledDays modifier is no longer required, this is automatically handled by specifying fromDate and toDate (same goes for DatePicker3 which already merged)
• I've refactored much of the implementation to use function components (however the root component is still a class)
• We now leverage rdp's built-in range picker support with mode="range" and numberOfMonths={2}. This works for single month range pickers and contiguous dual-month pickers.
  • rdp does not, however, have support for non-contiguous range pickers. We have to continue implementing this ourselves using multiple DayPickers, just like we did with rdp v7.
  • you can see the different approaches & use of different rdp custom components in NonContiguousDayRangePicker / ContiguousDayRangePicker.

Reviewers should focus on:

• No regressions compared to DateRangePicker
• Test coverage
• Documentation

Screenshot

Single month picker (note the new location of prev/next month navigation buttons now that we delegate to rdp to render the caption):

Contiguous two month picker:

Non-contiguous two month picker: