suggested fixes for congruences (#2299)

Summary:
Pull Request resolved: https://github.com/pytorch/executorch/pull/2299

X-link: https://github.com/pytorch/pytorch/pull/121418

Now that we have derived dims we can suggest fixes when we simply `Mod(...)` guards, a.k.a. congruences. E.g., when we see that `dim % 2 == 0` we can suggest the fix `dim = 2*_dim` where the range of `_dim` is reverse-engineered given the original range of `dim`.

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Reviewed By: angelayi

Differential Revision: D54636152

fbshipit-source-id: 049d008bdf93defecfae8d6341755c3135115a01