Fix misleading messages in test_jit_c10d (#57256)
Summary:
TCPStore is now available on Windows.
Before: `TCPStore not available on Windows`
After: `c10d was not compiled with the NCCL backend`
Pull Request resolved: https://github.com/pytorch/pytorch/pull/57256
Reviewed By: gchanan
Differential Revision: D28092539
Pulled By: H-Huang
fbshipit-source-id: 1e48cfe29b33b102bc97f51268ac1bbda596397d
