Fix flaky store timeout test (#19114)
Summary:
~Sometimes, `init_process_group()`, `store.get()`, and `destory_process_group()` can take more than a few seconds. Hence, removing thread join timeout.~
The error was due to `Address already in use` when starting TPC backend. The solution is to catch the error and report it to the `retry_on_address_already_in_use_error` decorator.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/19114
Reviewed By: ezyang
Differential Revision: D14872680
Pulled By: mrshenli
fbshipit-source-id: fc504d02853ca73f76288c0ade564ab20bc01f7e
