feat: update PersistentNavBarNavigator usage to avoid type errors in test environments

Author: oldrev

client/integration_test/device_group_test.dart

@@ -117,7 +117,7 @@ void deviceGroupTests() {
 
     // confirm deletion
     await tester.tap(find.byKey(const Key('btn_confirm_delete')));
-    await tester.pump(const Duration(milliseconds: 500));
+    await tester.pump(const Duration(milliseconds: 1000));
     // group should no longer be present
     expect(find.text('Updated Group'), findsNothing);
   });

client/lib/features/devices/views/devices_screen.dart

@@ -69,7 +69,7 @@ class DevicesScreen extends StatelessWidget {
   }
 
   Future<void> _showNewGroupScreen(BuildContext context) async {
-    final result = await PersistentNavBarNavigator.pushNewScreen<bool>(
+    final result = await PersistentNavBarNavigator.pushNewScreen(
       context,
       screen: const GroupEditScreen(args: GroupEditArguments(isCreation: true)),
       withNavBar: false,
@@ -325,7 +325,7 @@ class DevicesScreen extends StatelessWidget {
   }
 
   void _showEditGroupPage(BuildContext context, DeviceGroupEntity group) async {
-    final result = await PersistentNavBarNavigator.pushNewScreen<bool>(
+    final result = await PersistentNavBarNavigator.pushNewScreen(
       context,
       screen: GroupEditScreen(args: GroupEditArguments(isCreation: false, model: group)),
       withNavBar: false,

client/lib/main/views/main_screen.dart

@@ -52,7 +52,7 @@ class MyAppBar extends StatelessWidget implements PreferredSizeWidget {
   }
 
   Future<void> showNewGroupScreen(BuildContext context) async {
-    final result = await PersistentNavBarNavigator.pushNewScreen<bool>(
+    final result = await PersistentNavBarNavigator.pushNewScreen(
       context,
       screen: const GroupEditScreen(args: GroupEditArguments(isCreation: true)),
       withNavBar: false,