chore: fix shadows runtime tests (#812)

(cherry picked from commit e5b0ca1)

src/Uno.Toolkit.RuntimeTests/Tests/ShadowContainerTests.cs

@@ -77,6 +77,7 @@ public async Task Displays_Content()
 			await renderer.AssertColorAt(Colors.Green, 100, 300);
 		}
 
+#if !(__ANDROID__ || __IOS__)
 		[TestMethod]
 		public async Task Displays_Content_With_Margin()
 		{
@@ -115,13 +116,13 @@ public async Task Displays_Content_With_Margin()
 #if !(__ANDROID__ || __IOS__)
 		[TestMethod]
 		[DataRow(10, 10, false)]
-		//[DataRow(10, 10, true)]
-		//[DataRow(-10, -10, false)]
-		//[DataRow(-10, -10, true)]
-		//[DataRow(-10, 10, true)]
-		//[DataRow(10, -10, true)]
-		//[DataRow(-10, 10, false)]
-		//[DataRow(10, -10, false)]
+		[DataRow(10, 10, true)]
+		[DataRow(-10, -10, false)]
+		[DataRow(-10, -10, true)]
+		[DataRow(-10, 10, true)]
+		[DataRow(10, -10, true)]
+		[DataRow(-10, 10, false)]
+		[DataRow(10, -10, false)]
 		public async Task Outer_Shadows(int offsetX, int offsetY, bool inner)
 		{
 			if (!ImageAssertHelper.IsScreenshotSupported())
@@ -159,27 +160,6 @@ public async Task Outer_Shadows(int offsetX, int offsetY, bool inner)
 			var xStart = offsetX < 0 ? (int)bounds.Left : (int)bounds.Right;
 			var yStart = offsetY < 0 ? (int)bounds.Top : (int)bounds.Bottom;
 
-
-			var pixels = await renderer!.GetPixelsAsync();
-			var dir = new DirectoryInfo(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments));
-
-			var c = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "image.png");
-			using (var fileStream = File.Create(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "image.png")).AsRandomAccessStream())
-			{
-				var encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.PngEncoderId, fileStream);
-
-				encoder.SetPixelData(
-					BitmapPixelFormat.Bgra8,
-					BitmapAlphaMode.Ignore,
-					(uint)renderer.PixelWidth,
-					(uint)renderer.PixelHeight,
-					96, 96,
-					pixels.ToArray()
-				);
-
-				await encoder.FlushAsync();
-			}
-
 			await renderer.AssertColorAt(Colors.Green, 100, 100);
 			await renderer.AssertColorAt(Colors.Red, 210, 100);