We should always do this. So far we have been getting away with this
because we overallocate at v3dv_job_start_frame, but that won't do
for secondary command buffers for example, it is also unreliable
if CLs grow past that initial allocation.
In the future, we might want to fix our emit macros so they do the
allocation check implicitly, which would simplify the code and would
make this process a lot less error prone.
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6766>
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