[Bug libstdc++/96816] bitset: debug mode: operator== ambiguous

[jeanmichael.celerier at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96816

--- Comment #2 from Jean-Michaël Celerier <jeanmichael.celerier at gmail dot 
com> ---
I'd wager this is a result of C++20 operator<=> changes and operator==
synthesis.