multiple runtime bugfixes for 1.5.5+65

lib/view/login/nextcloud_login_flow_page.dart

@@ -8,7 +8,7 @@ import '../../api/errors/error_mapper.dart';
 import '../../api/marianumcloud/app_password/delete_app_password.dart';
 import '../../api/marianumcloud/login_flow/login_flow_api.dart';
 import '../../model/account_data.dart';
-import '../../routing/app_routes.dart';
+import '../../utils/url_opener.dart';
 import '../../widget/app_progress_indicator.dart';
 
 /// Die beiden Durchläufe des Login Flow v2: Der erste liefert das allgemeine
@@ -79,7 +79,7 @@ class _NextcloudLoginFlowPageState extends State<NextcloudLoginFlowPage>
       setState(() => _flow = flow);
       _startedAt = DateTime.now();
       _timer = Timer.periodic(_pollInterval, (_) => _poll());
-      unawaited(AppRoutes.openExternalUrl(flow.loginUrl));
+      unawaited(UrlOpener.openUrl(flow.loginUrl));
     } catch (e) {
       if (!mounted) return;
       setState(() => _error = errorToUserMessage(e));
@@ -240,7 +240,7 @@ class _NextcloudLoginFlowPageState extends State<NextcloudLoginFlowPage>
                       FilledButton.icon(
                         icon: const Icon(Icons.open_in_browser),
                         onPressed: () =>
-                            unawaited(AppRoutes.openExternalUrl(flow.loginUrl)),
+                            unawaited(UrlOpener.openUrl(flow.loginUrl)),
                         label: Text(
                           isTalkStep
                               ? 'Freigabe im Browser bestätigen'