Increase tolerance for test_grad_scaling_clipping (#60458)
Summary:
This makes it pass on A100 and with e.g. torch.manual_seed(6) called before running this test.
Fixes https://github.com/pytorch/pytorch/issues/60455
Pull Request resolved: https://github.com/pytorch/pytorch/pull/60458
Reviewed By: mrshenli
Differential Revision: D29309618
Pulled By: ngimel
fbshipit-source-id: 72584087bcc949f7bc96b0644b701e69ae1fa025
