[Bug libstdc++/114298] std::lazy_split_view constructor is currently not explicit

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114298

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
because LWG 3714 is an issue, and we treat most issues as DRs