pytorch - 💡(How to fix) Fix Regression in torch.distributed._functional_collectives.all_to_all_single in 2.9.1 -> 2.11

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See script https://gist.github.com/zou3519/b11dcce4675e3d90b7b8ffdc40fc124a

Discovered when upgrading SGLang from PyTorch 2.9.1 -> 2.11

cc @ezyang @gchanan @kadeng @msaroufim @awgu @wanchaol @fegin @fduwjj @wz337 @wconstab @d4l3k @pragupta @dcci @aditvenk @weifengpy

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pytorch - 💡(How to fix) Fix Regression in torch.distributed._functional_collectives.all_to_all_single in 2.9.1 -> 2.11