Enable HttpResponse.SuppressFormsAuthenticationRedirect

## Summary

From the docs:

> ///
> /// By default, the FormsAuthenticationModule hooks EndRequest and converts HTTP 401 status codes to
> /// HTTP 302, redirecting to the login page. This isn't appropriate for certain classes of errors,
> /// e.g. where authentication succeeded but authorization failed, or where the current request is
> /// an AJAX or web service request. This property provides a way to suppress the redirect behavior
> /// and send the original status code to the client.
> ///

## In scope

- `System.Web.HttpResponse.SuppressFormsAuthenticationRedirect `