Removed unwanted changes and updated screenshot

Author: Dhivya-SF4094

src/Controls/samples/Controls.Sample.Sandbox/MainPage.xaml.cs

@@ -1,9 +1,20 @@
-namespace Maui.Controls.Sample;
+using System.Collections.ObjectModel;
+
+namespace Maui.Controls.Sample;
 
 public partial class MainPage : ContentPage
 {
 	public MainPage()
 	{
 		InitializeComponent();
 	}
+}
+public class CollectionViewViewModel
+{
+	public ObservableCollection<string> ItemList { get; set; }
+
+	public CollectionViewViewModel()
+	{
+		ItemList = new ObservableCollection<string>();
+	}
 }

src/Controls/src/Core/Handlers/Items/iOS/StructuredItemsViewController.cs

@@ -95,11 +95,6 @@ internal void UpdateFooterView()
 			UpdateHeaderFooterPosition();
 		}
 
-		// private protected override void LayoutSupplementaryViews()
-		// {
-		// 	base.LayoutSupplementaryViews();
-		// 	UpdateHeaderFooterPosition();
-		// }
 		internal void UpdateHeaderView()
 		{
 			UpdateSubview(ItemsView?.Header, ItemsView?.HeaderTemplate, HeaderTag,

src/Controls/tests/TestCases.HostApp/Issues/Issue28604.cs

@@ -18,7 +18,8 @@ public Issue28604()
             AutomationId = "CollectionView",
             ItemsSource = ViewModel.ItemList,
             EmptyView = "EmptyView",
-            Header = new StackLayout
+            Background = Colors.AliceBlue,
+            Header = new VerticalStackLayout
             {
                 BackgroundColor = Colors.Red,
                 Children =
@@ -30,7 +31,7 @@ public Issue28604()
                         }
                     }
             },
-            Footer = new StackLayout
+            Footer = new VerticalStackLayout
             {
                 BackgroundColor = Colors.Yellow,
                 Children =

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue28604.cs

@@ -1,3 +1,4 @@
+#if IOS || MACCATALYST
 using NUnit.Framework;
 using UITest.Appium;
 using UITest.Core;
@@ -18,4 +19,5 @@ public void FooterShouldDisplayAtBottomOfEmptyView()
         App.WaitForElement("CollectionView");
         VerifyScreenshot();
     }
-}
+}
+#endif