In some cases the GPU reads from the tiler heap in fragment jobs, so
always add it to GPU jobs.
Fixes faults in many applications that use multiple windows
(e.g. Firefox, plasmashell).
Reviewed-by: Alyssa Rosenzweig <firstname.lastname@example.org>
for !8773 with bf-tiler
10 minutes and 1 second
(queued for 7 seconds)