fix(ui): keep mobile create task actions in safe area (#1504)

ui/flutter/test/features/tasks/presentation/create_task_window_page_test.dart

@@ -165,7 +165,7 @@ void main() {
     }
   });
 
-  testWidgets('mobile create task page starts below the system status bar', (WidgetTester tester) async {
+  testWidgets('mobile create task page stays within the system safe areas', (WidgetTester tester) async {
     debugDefaultTargetPlatformOverride = TargetPlatform.android;
     tester.view.physicalSize = const Size(700, 760);
     tester.view.devicePixelRatio = 1;
@@ -193,6 +193,10 @@ void main() {
 
       final contentPadding = tester.widget<Padding>(find.byKey(const ValueKey('create-task-safe-content')));
       expect((contentPadding.padding as EdgeInsets).top, 32);
+      expect(
+        tester.getBottomRight(find.byKey(const ValueKey('create-task-confirm-button'))).dy,
+        lessThanOrEqualTo(tester.view.physicalSize.height / tester.view.devicePixelRatio - 24),
+      );
     } finally {
       debugDefaultTargetPlatformOverride = null;
     }