[Bug libstdc++/64443] New std::string implementation breaks tests on AArch64.

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64443

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Probably the same issue as PR 64368 so it's probably a problem with the non-gnu
clocale model.