FluentDatePicker styling

[Nehakrg]

[vnbaaij]

Next time, please use normal text instead of an image...

1. Masking isnot supported
2. Add DisabledSelectable="false" to get rid of the strikethrough
3. Only the days from the current mont are selectable. Besides using the arrows, a user can click on month to quickly select any mont of the year or click on the yesr to select from a group of 12 years. See also https://www.fluentui-blazor.net/DateTime#defaultcalendar