[DDP] log usage of torch_distributed_debug (#59351)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/59351
Logging PT distributed debug level to track usage internally.
ghstack-source-id: 130443122
Test Plan: CI
Reviewed By: zhaojuanmao
Differential Revision: D28854914
fbshipit-source-id: a8e85ca4a3c9ac2f18d13190e87c0ebc4a8e7ea2
