radeonsi: submit cs to failed context instead of skipping them

radeonsi: submit cs to failed context instead of skipping them

Skipping the submission would trigger asserts in debug builds
or cause memory corruption.

Instead the cs is submitted as ususual but the kernel won't submit
it to the hardware (and will return ECANCELED) if the context
is really lost (= not soft-recovered).

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/2491
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10179>