Merge pull request #11089 from AvaloniaUI/refresh_vusualizer_fix

Correct Refresh Visualizer PullDirectionProperty's access modifier

src/Avalonia.Controls/PullToRefresh/RefreshVisualizer.cs

@@ -38,7 +38,7 @@ namespace Avalonia.Controls
         /// <summary>
         /// Defines the <see cref="PullDirection"/> property.
         /// </summary>
-        public static readonly StyledProperty<PullDirection> PullDirectionProperty =
+        internal static readonly StyledProperty<PullDirection> PullDirectionProperty =
             AvaloniaProperty.Register<RefreshVisualizer, PullDirection>(nameof(PullDirection), PullDirection.TopToBottom);
 
         /// <summary>