rememberWeekCalendarState
fun rememberWeekCalendarState(startDate: LocalDate? = null, endDate: LocalDate? = null, firstVisibleDate: LocalDate = currentDate(), firstDayOfWeek: DayOfWeek = PlatformDateFormat.firstDayOfWeek()): WeekCalendarState
Remembers saveable WeekCalendarState. Null startDate/endDate (the defaults) leave that side unbounded — the week strip scrolls indefinitely.