systemd/systemd-services: update flatpak user units

etc/profile.d/flatpak.csh
etc/profile.d/flatpak.sh
usr/bin/flatpak
usr/bin/flatpak-bisect
usr/bin/flatpak-coredumpctl
usr/lib/modules-load.d/flatpak.conf
usr/libexec/flatpak-oci-authenticator
usr/libexec/flatpak-portal
usr/libexec/flatpak-session-helper
usr/libexec/flatpak-system-helper
usr/libexec/flatpak-validate-icon
usr/libexec/revokefs-fuse
usr/share/dbus-1/interfaces/org.freedesktop.Flatpak.Authenticator.xml
usr/share/dbus-1/interfaces/org.freedesktop.Flatpak.xml
usr/share/dbus-1/interfaces/org.freedesktop.portal.Flatpak.xml
usr/share/dbus-1/services/org.flatpak.Authenticator.Oci.service
usr/share/dbus-1/services/org.freedesktop.Flatpak.service
usr/share/dbus-1/services/org.freedesktop.portal.Flatpak.service
usr/share/dbus-1/system-services/org.freedesktop.Flatpak.SystemHelper.service
usr/share/dbus-1/system.d/org.freedesktop.Flatpak.SystemHelper.conf
usr/share/flatpak/triggers/desktop-database.trigger
usr/share/flatpak/triggers/gtk-icon-cache.trigger
usr/share/flatpak/triggers/mime-database.trigger
var/lib/flatpak/repo/config

• missing flatpak-oci-authenticator.service still...

Fixes: #3475 (closed)