EmbeddingBackward exclusive_scan thrust->cub (#66566)
Summary:
Fixes #{issue number}
Pull Request resolved: https://github.com/pytorch/pytorch/pull/66566
Reviewed By: H-Huang
Differential Revision: D31637660
Pulled By: ngimel
fbshipit-source-id: 8093432bb9a9b902bb6bab7da221f0bcd7e9fb34
