Commits on Nov 3, 2024

1. Perform two passes in the variant caster …

   When converting a Python object that wraps a `T` to a
   `std::variant<U,T>`, where `U` is implicitly convertible
   from `T`, the variant caster will cast to the `U` (even though the
   Python object is definitely a `T`)
   
   The included test case demonstrates the issue. pybind11 does two pass
   conversion in this case. One can work around the issue by using
   `noconvert()` on the argument. But it seems that it would be a
   friendlier default to make type conversions in a variant work as
   expected.

   

   tjstum committed Nov 3, 2024
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