Datepicker: allow 00 for date and month #27
Description
The datepicker returns an empty string if it's not a valid date by date-fns package.
However, some citizens have '00' as day and/or month (e.g.: 00/00/1993 as birthdate on their official documents).
Even their RRN (rijksregisternummer) contains the 00 as day and/or month and is a valid RRN.
Is it possible to allow '00' as valid date and/or month or return the inputtedValue as value instead of an empty string?