The desktop type is the deprecated version of the
desktop-application type and is reserved for desktop applications,
which are supposed to install a .desktop file.
kio-gdrive is not a desktop application, but rather an addon.
Since we don't have a generic KIO component that we can extend, for now
we just extend all the file managers that support KIO
See https://lists.debian.org/debian-qt-kde/2018/07/msg00096.html for context.