TF-888 Apply new design for vacation on desktop

lib/features/manage_account/presentation/extensions/datetime_extension.dart

@@ -23,8 +23,7 @@ extension TimeOfDayExtension on TimeOfDay? {
 
   String formatTime(BuildContext context) {
     if (this != null) {
-      return MaterialLocalizations.of(context)
-          .formatTimeOfDay(this!, alwaysUse24HourFormat: true);
+      return MaterialLocalizations.of(context).formatTimeOfDay(this!);
     }
     return '';
   }

lib/features/manage_account/presentation/extensions/vacation_response_extension.dart

@@ -24,6 +24,7 @@ extension VacationResponseExtension on VacationResponse {
           ? TimeOfDay.fromDateTime(toDate!.value.toUtc())
           : null,
       messageBody: textBody ?? htmlBody,
+      subject: subject,
       vacationStopEnabled: toDate != null
     );
   }