formatDurationInHhMmSs method
Formats duration in HH:MM:SS format for display.
Converts a Duration object to a human-readable time format showing hours, minutes, and seconds with zero padding.
Parameters:
duration: Duration to format
Returns: Formatted time string in HH:MM:SS format
Implementation
String formatDurationInHhMmSs(Duration duration) {
final hh = (duration.inHours).toString().padLeft(2, '0');
final mm = (duration.inMinutes % 60).toString().padLeft(2, '0');
final ss = (duration.inSeconds % 60).toString().padLeft(2, '0');
return '$hh:$mm:$ss';
}