[Bug] [iOS] Button stays in Pressed state if the touch-cancel event occurs

[dg-m]

Description

If a system event occurs while a button is pressed the button released event isn't fired anymore.
The background-color is still on pressed button state.

Steps to Reproduce

1. Hold down a button
2. With the other hand pull down the iOS-Control-Center and release it

Expected Behavior

The button is in released state.

Actual Behavior

The button is still in pressed state.

Basic Information

• Version with issue: 4.8.0.1687
• iOS: 13.7

Workaround

using System;
using App.Libraries.UiComponents.iOS.Renderers;
using Xamarin.Forms;
using Xamarin.Forms.Platform.iOS;

[assembly: ExportRenderer(typeof(Button), typeof(ButtonRendereriOS))]

namespace App.Libraries.UiComponents.iOS.Renderers
{
    public class ButtonRendereriOS : ButtonRenderer
    {
        protected override void OnElementChanged(ElementChangedEventArgs<Button> e)
        {
            base.OnElementChanged(e);

            if (Control != null && e.NewElement is Button view)
            {
                Control.TouchCancel += SendReleased;
            }
        }

        protected override void Dispose(bool disposing)
        {
            if (Control != null)
            {
                Control.TouchCancel -= SendReleased;
            }

            base.Dispose(disposing);
        }

        void SendReleased(object sender, EventArgs e)
        {
            ((IButtonController)Element)?.SendReleased();
        }
    }
}