getFormattedTime method
Returns the selected time formatted as a string in 24-hour format (HH:MM).
The hours and minutes are zero-padded to ensure they are always two digits. @return A string representation of the selected time.
Implementation
String getFormattedTime() {
return '${_selectedHour.toString().padLeft(2, '0')}:${_selectedMinute.toString().padLeft(2, '0')}';
}