Allow in graph einops operators (#99631)
Coordinating with arogozhnikov from einops team, allowing specific operators in the dynamo graph avoids dynamo tracing problems provided the operators are screened for safety - they must not bake in unintended constants or take data-dependent control flow paths.
Fixes #99031
Pull Request resolved: https://github.com/pytorch/pytorch/pull/99631
Approved by: https://github.com/jansel
