[libcxx-commits] [libcxx] [libc++][locale] Update grouping tests (PR #119463)

[Ryan Prichard via libcxx-commits]

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

Looks good to me, but I believe someone in reviewers-libcxx needs to approve it.

https://github.com/llvm/llvm-project/pull/119463