Fix CheckBox's VisualStates (#8605) Fixes #8596

* Propagate CheckBox Color property changes to handlers

* Added device test

src/Controls/src/Core/CheckBox.cs

@@ -15,6 +15,7 @@ public partial class CheckBox : View, IElementConfiguration<CheckBox>, IBorderEl
 			BindableProperty.Create(nameof(IsChecked), typeof(bool), typeof(CheckBox), false,
 				propertyChanged: (bindable, oldValue, newValue) =>
 				{
+					((CheckBox)bindable).Handler?.UpdateValue(nameof(ICheckBox.Foreground));
 					((CheckBox)bindable).CheckedChanged?.Invoke(bindable, new CheckedChangedEventArgs((bool)newValue));
 					((CheckBox)bindable).ChangeVisualState();
 				}, defaultBindingMode: BindingMode.TwoWay);

src/Core/tests/DeviceTests/Handlers/CheckBox/CheckBoxHandlerTests.cs

@@ -22,8 +22,8 @@ public async Task IsCheckedInitializesCorrectly(bool isChecked)
 			await ValidatePropertyInitValue(checkBoxStub, () => checkBoxStub.IsChecked, GetNativeIsChecked, checkBoxStub.IsChecked);
 		}
 
-		[Fact(DisplayName = "Foreground Updates Correctly")]
-		public async Task ForegroundUpdatesCorrectly()
+		[Fact(DisplayName = "Foreground Initializes Correctly")]
+		public async Task ForegroundInitializesCorrectly()
 		{
 			var checkBoxStub = new CheckBoxStub()
 			{
@@ -33,5 +33,22 @@ public async Task ForegroundUpdatesCorrectly()
 
 			await ValidateColor(checkBoxStub, Colors.Red);
 		}
+
+		[Theory(DisplayName = "Foreground Updates Correctly")]
+		[InlineData(0xFF0000)]
+		[InlineData(0x0000FF)]
+		public async Task ForegroundUpdatesCorrectly(uint color)
+		{
+			var checkBoxStub = new CheckBoxStub
+			{
+				Foreground = new SolidPaint(Colors.Black),
+				IsChecked = true
+			};
+
+			var expected = Color.FromUint(color);
+			checkBoxStub.Foreground = new SolidPaint(expected);
+
+			await ValidateColor(checkBoxStub, expected);
+		}
 	}
 }