Crashing/freezing on iOS 15 and greater (open issue from Xamarin)

[alexmartinezm]

Open issue: [Bug] [iOS] Freezing/App Crash during Navigation - new in iOS 15

Workaround:

• Download the package and add it to your solution
• Modify the TopTabbedRenderer with the following lines

        protected override void Dispose(bool disposing)
        {
            // Avoid disposing on iOS 15 due to open issue on GitHub: https://github.com/xamarin/Xamarin.Forms/issues/14783
            if (UIDevice.CurrentDevice.CheckSystemVersion(15, 0))
                return;

            [...]
        }

[tuyen-vuduc]

@alexmartinezm It'll be great if you create a PR :) .