Filter out DMs and CRs when determining if newer unread notifications before loading older read notifications since those always return regardless of minimum notfication ID

Fixes Issue #101

lib/services/notifications_manager.dart

@@ -140,7 +140,13 @@ class NotificationsManager extends ChangeNotifier {
     if (unread.isNotEmpty) {
       final result =
           await _loadOlderUnreadNotifications(withListenerNotification);
-      if (result.getValueOrElse(() => []).isNotEmpty) {
+      final nonDmAndConnectionNotifications = result
+          .getValueOrElse(() => [])
+          .where((n) =>
+              n.type != NotificationType.follow_request &&
+              n.type != NotificationType.direct_message)
+          .toList();
+      if (nonDmAndConnectionNotifications.isNotEmpty) {
         return result;
       }
     }