Disable automount on KDE live images (#2073708)

It's mounting non-removable devices and causing problems for
anaconda. Note, KDE will still show a notification with a
button for mounting the device, and it shows in the file manager
where clicking on it mounts it; the behaviour is about the same
as Fedora 35 (slightly better, as the notification shows on
subsequent plugs of the same stick, which it did not in F35).

Signed-off-by: Adam Williamson <awilliam@redhat.com>

fedora-live-kde-base.ks

@@ -85,6 +85,15 @@ cat > /home/liveuser/.config/kwalletrc << KWALLET_EOL
 alreadyMigrated=true
 KWALLET_EOL
 
+# Disable automount of 'known' devices
+# https://bugzilla.redhat.com/show_bug.cgi?id=2073708
+cat > /home/liveuser/.config/kded_device_automounterrc << AUTOMOUNTER_EOF
+[General]
+AutomountEnabled=false
+AutomountOnLogin=false
+AutomountOnPlugin=false
+AUTOMOUNTER_EOF
+
 # make sure to set the right permissions and selinux contexts
 chown -R liveuser:liveuser /home/liveuser/
 restorecon -R /home/liveuser/