Fixed holidays in past showing negative countdown

lib/view/pages/more/holidays/holidays.dart

@@ -135,10 +135,17 @@ class _HolidaysState extends State<Holidays> {
                       leading: const Icon(Icons.arrow_back),
                       title: Text("bis zum ${parseString(holiday.end)}"),
                     ),
-                    ListTile(
-                      leading: const CenteredLeading(Icon(Icons.timer_outlined)),
-                      title: AnimatedTime(callback: () => DateTime.parse(holiday.start).difference(DateTime.now())),
-                      subtitle: Text(Jiffy.parse(holiday.start).fromNow()),
+                    Visibility(
+                      visible: !DateTime.parse(holiday.start).difference(DateTime.now()).isNegative,
+                      replacement: ListTile(
+                        leading: const CenteredLeading(Icon(Icons.content_paste_search_outlined)),
+                        title: Text(Jiffy.parse(holiday.start).fromNow()),
+                      ),
+                      child: ListTile(
+                        leading: const CenteredLeading(Icon(Icons.timer_outlined)),
+                        title: AnimatedTime(callback: () => DateTime.parse(holiday.start).difference(DateTime.now())),
+                        subtitle: Text(Jiffy.parse(holiday.start).fromNow()),
+                      ),
                     ),
                     DebugTile(holiday.toJson()).asTile(context),
                   ],