Removes the manifest file from any site, which enables the "back" arrow in all Progressive Web Apps.
The latest versions of Edge and Chrome removes the "back" arrow on any PWA where the developer of such site doesn't specify to add it in the manifest file of such site. Sometimes this leads to a bad user experience. This script disables the manifest file from the sites you browse, so when you decide to install a site as a Progressive Web App, the "back" arrow will be included.