Update default shape values in CustomSwitch properties

Changed default values for StrokeShapeProperty and KnobStrokeShapeProperty in the CustomSwitch class from Rect to Rectangle. This update likely corrects or improves the shape type used for these properties.

Scr/Switch/CustomSwitch.xaml.cs

@@ -40,7 +40,7 @@ public int ToggleAnimationDuration
 		set => SetValue(WidthRequestProperty, value);
 	}
 
-	public static readonly BindableProperty StrokeShapeProperty = BindableProperty.Create(nameof(StrokeShape), typeof(IShape), typeof(CustomSwitch), new Rect());
+	public static readonly BindableProperty StrokeShapeProperty = BindableProperty.Create(nameof(StrokeShape), typeof(IShape), typeof(CustomSwitch), new Rectangle());
 
 	[TypeConverter(typeof(StrokeShapeTypeConverter))]
 	public IShape? StrokeShape
@@ -126,7 +126,7 @@ public Color KnobBackgroundColor
 		set => SetValue(KnobBackgroundColorProperty, value);
 	}
 
-	public static readonly BindableProperty KnobStrokeShapeProperty = BindableProperty.Create(nameof(KnobStrokeShape), typeof(IShape), typeof(CustomSwitch), new Rect());
+	public static readonly BindableProperty KnobStrokeShapeProperty = BindableProperty.Create(nameof(KnobStrokeShape), typeof(IShape), typeof(CustomSwitch), new Rectangle());
 
 	[TypeConverter(typeof(StrokeShapeTypeConverter))]
 	public IShape? KnobStrokeShape