[CI] Move opencl::cpu testing in precommit to PVC

[uditagarwal97]

PVC runners are faster than Gen12 ones.

After this change, the CI runtime of:
Gen12 will go from 10m 14s to 7m 11s.
PVC w/o igc-dev will go from 6m to 8m 20s.

[sarnex]

even though the overall time is decreased, the number of pvc runners is less than gen12 runners, so we risk increasing time overall by causing more time waiting for a job to run, but i expect that to be relatively minimal and think we can try this out and take a second look if we notice something

[aelovikov-intel]

even though the overall time is decreased, the number of pvc runners is less than gen12 runners, so we risk increasing time overall by causing more time waiting for a job to run, but i expect that to be relatively minimal and think we can try this out and take a second look if we notice something

In recent days it's much more likely that gen12 runner is idle than a pvc runner, so I think we shouldn't merge this now.