pytorch

853112bb - [7/n] [torch/elastic] Rename _Rendezvous to _RendezvousState (#56535)

[7/n] [torch/elastic] Rename _Rendezvous to _RendezvousState (#56535) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/56535 This PR renames the `_Rendezvous` class to `_RendezvousState` in preparation of the upcoming changes. ghstack-source-id: 126979138 Test Plan: Run the existing unit tests. Reviewed By: H-Huang Differential Revision: D27889894 fbshipit-source-id: 027d26aa5e1acd5bba3ad2e58b140428a4a176b2