Replace DeviceIndexes with Devices in RRefs (#57442)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/57442
We did this for the RPC agents and for ivalue::Future, the last one (I think) is RRef.
ghstack-source-id: 128184664
Test Plan: CI
Reviewed By: mrshenli
Differential Revision: D28144368
fbshipit-source-id: eeacab6006f72118cbec542a02322f2e391c67a3
