Fix start job lock owner
Related to https://github.com/huggingface/datasets-server/pull/1420

fixes (hopefully) https://github.com/huggingface/datasets-server/issues/1467 
Fix start job lock owner: Related to https://github.com/huggingface/datasets-server/pull/1420

fixes (hopefully) https://github.com/huggingface/datasets-server/issues/1467 