Re-enable test_hf_bert_fsdp (#89223)
It looks like this failure was actually caused by https://github.com/pytorch/pytorch/pull/88629, see the revert message on that PR. It probably just looked like a flaky test on CI because of how quickly the PR was reverted.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/89223
Approved by: https://github.com/voznesenskym
