[@mantine/dates]: Fix navigation order for date components

[filiptammergard]

Fixes #3660.

DatePicker/Calendar:

• Only add selected date to tab order when month has selected date.
• Only add current date to tab order when no date is selected and current date is in month.
• Only add first non-disabled date to tab order when no date is selected and current date is not in month.

MonthPicker:

• Only add selected month to tab order when year has selected month.
• Only add current month to tab order when no month is selected and current month is in year.
• Only add first non-disabled month to tab order when no month is selected and current month is not in year.

YearPicker:

• Only add selected year to tab order when decade has selected year.
• Only add current year to tab order when no year is selected and current year is in decade.
• Only add first non-disabled year to tab order when no year is selected and current year is not in decade.

[rtivital]

@filiptammergard Are you planning to finish your work on this PR?

[filiptammergard]

@filiptammergard Are you planning to finish your work on this PR?

Yeah, I'll try to make some time for this within the next couple of days. Feel free to continue from your side if you want—the most important thing for me is that tab order is improved since I'm using the component in some projects.

[filiptammergard]

Hey @rtivital! Took some time to continue on this one and changed the approach to compute tab order based on all years/months/days instead, since you cannot determine tab order based on an isolated year/month/day without passing a bunch of arguments for context.

Is it missing something still?

[rtivital]

Works great, thanks for your work on this issue!