Check for unrolled loop in break & continue (#29474)
Summary:
For the same reason we don't allow iteration over heterogenous types (modulelists/tuples) with types that don't have a static length, we also can't break/continue within them - we need to statically know all types.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/29474
Differential Revision: D18406097
Pulled By: eellison
fbshipit-source-id: 70ed3fc4947b6237cdd6703135a988a5c13ce786
