Revert "Squashed commit of the following: (#19629)"

This reverts commit a984765.

src/Controls/src/Core/Page/Page.cs

@@ -282,7 +282,7 @@ public Task<string> DisplayActionSheet(string title, string cancel, string destr
 		/// Displays a platform action sheet, allowing the application user to choose from several buttons.
 		/// </summary>
 		/// <param name="title">Title of the displayed action sheet. Can be <see langword="null"/> to hide the title.</param>
-		/// <param name="cancel">Text to be displayed in the 'Cancel' button. Can be null to hide the cancel action.</param>
+		/// <param name="cancel">Text to be displayed in the 'Cancel' button. Can be null to hide the <see langword="null"/> action.</param>
 		/// <param name="destruction">Text to be displayed in the 'Destruct' button. Can be <see langword="null"/> to hide the destructive option.</param>
 		/// <param name="flowDirection">The flow direction to be used by the action sheet.</param>
 		/// <param name="buttons">Text labels for additional buttons.</param>

src/Controls/src/Core/Platform/AlertManager/AlertManager.iOS.cs

@@ -187,15 +187,12 @@ static void PresentPopUp(Page sender, Window virtualView, UIWindow platformView,
 					presentingWindow = senderPageWindow;
 				}
 
-				if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad &&
-					arguments is not null &&
-					alert.PopoverPresentationController is not null &&
-					platformView.RootViewController?.View is not null)
+				if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad && arguments != null)
 				{
 					var topViewController = GetTopUIViewController(presentingWindow);
 					UIDevice.CurrentDevice.BeginGeneratingDeviceOrientationNotifications();
 					var observer = NSNotificationCenter.DefaultCenter.AddObserver(UIDevice.OrientationDidChangeNotification,
-						n => alert.PopoverPresentationController.SourceRect = topViewController.View.Bounds);
+						n => { alert.PopoverPresentationController.SourceRect = topViewController.View.Bounds; });
 
 					arguments.Result.Task.ContinueWith(t =>
 					{
@@ -219,7 +216,7 @@ alert.PopoverPresentationController is not null &&
 			static UIViewController GetTopUIViewController(UIWindow platformWindow)
 			{
 				var topUIViewController = platformWindow.RootViewController;
-				while (topUIViewController?.PresentedViewController is not null)
+				while (topUIViewController.PresentedViewController is not null)
 				{
 					topUIViewController = topUIViewController.PresentedViewController;
 				}

src/Controls/tests/CustomAttributes/Test.cs

@@ -743,16 +743,6 @@ public enum InputTransparency
 		CascadeTransLayoutOverlayWithButton,
 	}
 
-	public enum Alerts
-	{
-		AlertCancel,
-		AlertAcceptCancelClickAccept,
-		AlertAcceptCancelClickCancel,
-		ActionSheetClickItem,
-		ActionSheetClickCancel,
-		ActionSheetClickDestroy,
-	}
-
 	public static class InputTransparencyMatrix
 	{
 		// this is both for color diff and cols

src/Controls/tests/TestCases/CoreViews/CorePageView.cs

@@ -51,7 +51,6 @@ public override string ToString()
 			new GalleryPageFactory(() => new GestureRecognizerGallery(), "Gesture Recognizer Gallery"),
 			new GalleryPageFactory(() => new InputTransparencyGalleryPage(), "Input Transparency Gallery"),
 			new GalleryPageFactory(() => new ImageLoadingGalleryPage(), "Image Loading Gallery"),
-			new GalleryPageFactory(() => new AlertsGalleryPage(), "Alerts Gallery"),
 			// Elements
 			new GalleryPageFactory(() => new ActivityIndicatorCoreGalleryPage(), "ActivityIndicator Gallery"),
 			new GalleryPageFactory(() => new BoxViewCoreGalleryPage(), "Box Gallery"),