Support UnionTypes in Optional check (#2224)
* Add pydantic1-none integration test
* Fix test name
* Fix checking union types as optionals
* Use UnionType as well to confirm presence of an
Optional type
* Update python/cog/predictor.py
Co-authored-by: Aron Carroll <aron@replicate.com>
Signed-off-by: Will Sackfield <will.sackfield@gmail.com>
* Add new-union-project test
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Signed-off-by: Will Sackfield <will.sackfield@gmail.com>
Co-authored-by: Aron Carroll <aron@replicate.com>
