Comment 69 for bug 1741074

As explained in [the ff2mpv issue](https://github.com/woodruffw/ff2mpv/issues/80#issuecomment-1245630280), desktop shells (such as GNOME Shell) and portal frontends (such as xdg-desktop-portal-gtk and xdg-desktop-portal-kde) should display a modal prompt the first time an extension requires this permission, and so you wouldn't need to use the flatpak command to make this choice "by hand". However minimal window managers without portal frontends (e.g. i3) are unlikely to implement that prompt, and the answer will default to "no".