Back out "Revert D18299298: [pytorch][PR] Migrate conv3d from TH to ATen (CPU)" (#29286)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/29286
Original commit changeset: 33057d5a91d1
ghstack-source-id: 93638554
Test Plan: sandcastle and ossci
Differential Revision: D18349945
fbshipit-source-id: 9d9ddb0c185248a2073ade1063bb69ffbfa48b46
