[6/n] [torch/elastic] Reorder type definitions in dynamic_rendezvous.py (#56534)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/56534
This PR reorders the type definitions in dynamic_rendezvous.py to increase the readability.
ghstack-source-id: 126979087
Test Plan: Run the existing unit tests.
Reviewed By: H-Huang
Differential Revision: D27889817
fbshipit-source-id: 04291af9b8f3170e4b33cb4f33e0dff0d2d3fb23
