[iOS] Fix SearchBar unexpected left margin in iPad windowed mode on 26 Version

src/Core/src/Platform/iOS/MauiSearchBar.cs

@@ -16,10 +16,12 @@ public MauiSearchBar() : this(RectangleF.Empty)
 
 		public MauiSearchBar(NSCoder coder) : base(coder)
 		{
+			InsetsLayoutMarginsFromSafeArea = false;
 		}
 
 		public MauiSearchBar(CGRect frame) : base(frame)
 		{
+			InsetsLayoutMarginsFromSafeArea = false;
 		}
 
 		protected MauiSearchBar(NSObjectFlag t) : base(t)

src/Core/src/PublicAPI/net-ios/PublicAPI.Unshipped.txt

@@ -1,3 +1,3 @@
 #nullable enable
 override Microsoft.Maui.Handlers.StepperHandler.GetDesiredSize(double widthConstraint, double heightConstraint) -> Microsoft.Maui.Graphics.Size
-override Microsoft.Maui.Platform.MauiView.DidUpdateFocus(UIKit.UIFocusUpdateContext! context, UIKit.UIFocusAnimationCoordinator! coordinator) -> void
+override Microsoft.Maui.Platform.MauiView.DidUpdateFocus(UIKit.UIFocusUpdateContext! context, UIKit.UIFocusAnimationCoordinator! coordinator) -> void

src/Core/tests/DeviceTests/Handlers/SearchBar/SearchBarHandlerTests.iOS.cs

@@ -4,6 +4,7 @@
 using Microsoft.Maui.Graphics;
 using Microsoft.Maui.Handlers;
 using Microsoft.Maui.Hosting;
+using Microsoft.Maui.Platform;
 using ObjCRuntime;
 using UIKit;
 using Xunit;
@@ -59,6 +60,19 @@ public async Task ReturnTypeInitializesCorrectly()
 			Assert.Equal(expectedValue, values.PlatformViewValue);
 		}
 
+		[Fact(DisplayName = "MauiSearchBar disables InsetsLayoutMarginsFromSafeArea to prevent double safe-area inset (#34551)")]
+		public async Task MauiSearchBarInsetsLayoutMarginsFromSafeAreaIsFalse()
+		{
+			var searchBar = new SearchBarStub();
+
+			await InvokeOnMainThreadAsync(() =>
+			{
+				var platformView = CreateHandler(searchBar).PlatformView;
+				var mauiSearchBar = Assert.IsType<MauiSearchBar>(platformView);
+				Assert.False(mauiSearchBar.InsetsLayoutMarginsFromSafeArea);
+			});
+		}
+
 		[Fact]
 		public async Task ShouldShowCancelButtonToggles()
 		{