System.Console.IsOutputRedirected Not supported on Xamarin.mac

Using commandlineparser on Xamarin.Mac Modern throws a PlatformNotSupportedException when trying to set MaximumDisplayWidth. I found some older issues with docker where setting `MaximumDisplayWdith` explicitly would fix the issue. Unfortunately this won't work here, as the call to `System.Console.IsOutputRedirected` happens in the ParserSettings constructor.