Workaround since binding doesn't work yet on IDrawable/GraphicsView

IDrawableWorkaround.cs

internal class CustomGraphicsView : GraphicsView
{
    // TODO workaround since binding doesn't work yet on IDrawable/GraphicsView
    // https://github.com/dotnet/maui/issues/20991
    protected override void OnBindingContextChanged()
    {
        base.OnBindingContextChanged();

        if (BindingContext is not null)
        {
            if (Drawable is BindableObject bindable)
            {
                bindable.BindingContext = BindingContext;
            }
        }
    }
}