[Bug libstdc++/94674] std::ranges::basic_istream_view::iterator is missing std::iterator_traits entries

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94674

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This is a known defect in the C++20 draft:
https://cplusplus.github.io/LWG/issue3394