Finally fixed D2D tests

src/Windows/Avalonia.Direct2D1/Media/Imaging/WicRenderTargetBitmapImpl.cs

@@ -5,7 +5,7 @@ using SharpDX.Direct2D1;
 
 namespace Avalonia.Direct2D1.Media
 {
-    public class WicRenderTargetBitmapImpl : WicBitmapImpl, IRenderTargetBitmapImpl
+    public class WicRenderTargetBitmapImpl : WicBitmapImpl, IDrawingContextLayerImpl
     {
         private readonly WicRenderTarget _renderTarget;
 
@@ -45,5 +45,8 @@ namespace Avalonia.Direct2D1.Media
                     finishedCallback?.Invoke();
                 });
         }
+
+        public void Blit(IDrawingContextImpl context) => throw new NotSupportedException();
+        public bool CanBlit => false;
     }
 }