Add weekdaysLong value as weekday aria-label

[cjwiseman11]

Is your feature request related to a problem? Please describe.
When using "weekdaysShort", assistive technology will also read out the shortened versions and this can sometimes be meaningless (e.g. M, T, W, T, F, S, S).

Describe the solution you'd like
A nice, simple solution would be to add "weekdaysLong" as the aria-label for each weekday element

Describe alternatives you've considered
Currently it's possible to create your own weekday element and add the aria-label manually but it could be a nice accessibility feature to add this as standard. Current workaround for me:
weekdayElement={({ weekdaysShort, weekdaysLong, weekday, className }) => ( <p className={className} aria-label={weekdaysLong[weekday]}> {weekdaysShort[weekday]} </p> )}