catch all exceptions in converting default values to ivalues (#31398)
Summary:
Previously we would only catch `py::cast_error` which led to incomprehensible error messages like: `TypeError: 'NoneType' object is not iterable`. We are running arbitrary pybind code here, and not doing anything with the error message, so we should be less restrictive with the types of errors we catch.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/31398
Differential Revision: D19166655
Pulled By: eellison
fbshipit-source-id: 84db8b3714c718b475913f2f4bb6f19e62f2d9ec
