[Bug libstdc++/120644] [16 Regression] FAILs in various xtreme-header tests since r16-1487

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120644

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Changing auto to std::range_format fixes the error, so could be used at least
as a workaround.