Add count to FakeTensorMode.__torch_dispatch__ (#93936)
Most calls to fake tensor never hit `FakeTensor.__torch_dispatch__`
Signed-off-by: Edward Z. Yang <ezyang@meta.com>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/93936
Approved by: https://github.com/bdhirsh, https://github.com/albanD
