[libcxx-commits] [libcxx] [libc++] Make all `__random/HEADER.h` depend on `<__math/FOO.h>` instead of `<cmath>` and use `__math::` namespace instead `std::` (PR #213084)

[Louis Dionne via libcxx-commits]

https://github.com/ldionne approved this pull request.

More merge conflicts, LGTM. Can be merged once CI is passing.

https://github.com/llvm/llvm-project/pull/213084