[BUG]:libcuspatial requires --expt-relaxed-constexpr and fails to build.

[harrism]

Version

25.02

On which installation method(s) does this occur?

Docker

Describe the issue

We removed --expt-relaxed-constexpr for libcuproj and libcuspatial in #1495 but it seems that libcuspatial requires this flag for things like constexpr std::optional<T>::value() and the internal type traits functions which are constexpr and not __host__ __device__.

We should restore the option to the libcuspatial/cmake/ConfigureCUDA.cmake.

Minimum reproducible example

Relevant log output

Environment details

Other/Misc.

No response