Merge pull request #4466 from Morgomirius/patch-1

Fixed DependencyProperty assign exception.

Microsoft.Toolkit.Uwp.UI.Behaviors/Animations/StopAnimationAction.cs

@@ -29,7 +29,7 @@ namespace Microsoft.Toolkit.Uwp.UI.Behaviors
         public static readonly DependencyProperty AnimationProperty = DependencyProperty.Register(
             nameof(Animation),
             typeof(AnimationSet),
-            typeof(StartAnimationAction),
+            typeof(StopAnimationAction),
             new PropertyMetadata(null));
 
         /// <summary>
@@ -47,7 +47,7 @@ namespace Microsoft.Toolkit.Uwp.UI.Behaviors
         public static readonly DependencyProperty TargetObjectProperty = DependencyProperty.Register(
             nameof(TargetObject),
             typeof(UIElement),
-            typeof(StartAnimationActivity),
+            typeof(StopAnimationAction),
             new PropertyMetadata(null));
 
         /// <inheritdoc/>
@@ -78,4 +78,4 @@ namespace Microsoft.Toolkit.Uwp.UI.Behaviors
             static void ThrowArgumentNullException() => throw new ArgumentNullException(nameof(Animation));
         }
     }
-}
+}