Actually chown artifacts (#84672)
Rollback part of https://github.com/pytorch/pytorch/commit/045ebc771d5070696f839e586285ace9c06f1339 to actually chown artifacts folder rather than workspace
Fixes https://github.com/pytorch/pytorch/issues/84644
Pull Request resolved: https://github.com/pytorch/pytorch/pull/84672
Approved by: https://github.com/kit1980, https://github.com/huydhn
