[Backport release-1.15] [python] Validate byteorder on fastercsx argument arrays

[github-actions]

Backport fbeee6f from #3508

[johnkerl]

This does not successfully backport from main to release-1.15 since we currently have C++20 on main but C++17 on release-1.15

https://github.com/single-cell-data/TileDB-SOMA/actions/runs/12654002797/job/35260823182

  src/tiledbsoma/fastercsx.cc:118:47: error: ‘std::endian’ has not been declared
    118 |     if constexpr (std::endian::native == std::endian::big)

See also #3154