xfail maml test, instead of running it without fake tensor prop (#89645)
A previous version of this patch graph breaks when torch.tensor fails, but that causes
```
PYTORCH_TEST_WITH_DYNAMO=1 python test/nn/test_embedding.py -k test_embedding_bag_1D_padding_idx_cpu_float32
```
to start failing. Probably another latent bug that needs investigating.
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/89645
Approved by: https://github.com/albanD
