Fix test_get_and_set_timeout for TensorPipe Agent (#39353)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/39353
This test failed with TSAN since the shortened timeout prevented all
messages from being processed within the timeout during Phase 1 of
wait_all_workers during RPC shutdown. Phase 2 already had a longer timeout, so
we extend this to Phase 1 as well.
ghstack-source-id: 105045926
Test Plan: Ran the test_get_and_set_timeout with TSAN
Differential Revision: D21826783
fbshipit-source-id: 7edfdeb50169b31e997dd36a3fd8eea0e9ae7189
