glthread: don't upload for glDraw inside a display list and always sync
Let the vbo module handle it, not glthread.
This handles functions set in vbo_initialize_save_dispatch.
Fixes: 2840bc3065b ("glthread: upload non-VBO vertices and indices for non-Indirect non-IBM draws")
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/3001
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5246>