[Mlir-commits] [mlir] [mlir][py] Mark all type caster `from_{cpp, python}` methods as noexcept (PR #143866)

[Maksim Levental]

makslevental wrote:

I would say just use `std::optional<object>` (instead of `py::none()`) and take the hit on refactoring all the call sites.

https://github.com/llvm/llvm-project/pull/143866