optimized performance

src/Shared/HandyControl_Shared/Controls/Other/Badge.cs

@@ -86,7 +86,7 @@ namespace HandyControl.Controls
         public bool ShowBadge
         {
             get => (bool) GetValue(ShowBadgeProperty);
-            set => SetValue(ShowBadgeProperty, value);
+            set => SetValue(ShowBadgeProperty, ValueBoxes.BooleanBox(value));
         }
 
         protected override Geometry GetLayoutClip(Size layoutSlotSize) => null;