Glide retries failed requests when the activity is restarted

If a request failed, Glide will try to load it again when the app is minimized and restored, even if the request failed due to unrecoverable error such as a 404.

To reproduce, simply do `Glide.with(this /* Activity */).load("http://bad-url/").into(imageView);`, minimize and restore the app. If application context is used instead of an activity, the problem doesn't manifest itself. It happens every time on default configuration so I'm not including further details.

**Glide Version**: 4.11.0