jumpToInitialDate method
Implementation
void jumpToInitialDate(DateTime? newInitialDate) {
final clampedInitialDate = PickerPlusDateUtilsX.clampDateToRange(
max: maxDate,
min: minDate,
date: DateTime.now(),
);
final init = PickerPlusDateUtilsX.yearOnly(newInitialDate ?? clampedInitialDate);
displayedYear.value = init;
pageController.jumpToPage(init.year - minDate.year);
}