replaced Gap Class with the appropriate SizedBox

removed the Gap dependency

lib/features/scene/view/widgets/scene_view_no_scenes.dart

@@ -1,5 +1,4 @@
 import 'package:flutter/material.dart';
-import 'package:gap/gap.dart';
 import 'package:syncrow_app/features/shared_widgets/default_text_button.dart';
 import 'package:syncrow_app/generated/assets.dart';
 
@@ -22,13 +21,13 @@ class SceneViewNoScenes extends StatelessWidget {
               opacity: const AlwaysStoppedAnimation(.5),
               width: 140,
             ),
-            const Gap(15),
+            const SizedBox(height: 15),
             const Text(
               'Home automation saves your time and effort by automating routine tasks.',
               textAlign: TextAlign.center,
               style: TextStyle(color: Colors.grey),
             ),
-            const Gap(20),
+            const SizedBox(height: 20),
             const DefaultTextButton(
               text: 'Create Scene',
             )