Make SharedCache thread-safe (#53750)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/53731
Make SharedCache thread-safe by using explicit locks instead of relying on atomicity of certain Python operations
Pull Request resolved: https://github.com/pytorch/pytorch/pull/53750
Reviewed By: malfet
Differential Revision: D27304793
Pulled By: albanD
fbshipit-source-id: 7c62babe4357bed57df3056fbda6801fb6168846
