add JumpToEventController to allow jumping to events from the NotificationsPage when it has been pushed from the NotificationController

lib/controllers/jump_to_event.dart

@@ -0,0 +1,15 @@
+import "package:flutter_riverpod/flutter_riverpod.dart";
+
+class JumpToEventController extends Notifier<String?> {
+  @override
+  String? build() => null;
+
+  void set(String? eventId) => state = eventId;
+
+  @override
+  bool updateShouldNotify(_, _) => true;
+
+  static final provider = NotifierProvider<JumpToEventController, String?>(
+    JumpToEventController.new,
+  );
+}

lib/controllers/notification.dart

@@ -37,7 +37,6 @@ class NotificationController
                 MaterialPageRoute(
                   builder: (_) => NotificationsPage(
                     highlightedEventId: eventId,
-                    jumpToEvent: (eventId) {},
                     defaultToAllNotifications: true,
                   ),
                 ),
@@ -63,7 +62,6 @@ class NotificationController
             MaterialPageRoute(
               builder: (_) => NotificationsPage(
                 highlightedEventId: eventId,
-                jumpToEvent: (eventId) {},
                 defaultToAllNotifications: true,
               ),
             ),