Switch PG::Work to Future in default_comm_hooks.cpp (#59398)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/59398
Test Plan: Imported from OSS
Reviewed By: SciPioneer
Differential Revision: D28876182
Pulled By: agolynski
fbshipit-source-id: 9d8f09ffa2f40bb0fb25c626b52678a1597a797e
