[Bug c++/94890] std::tuple({0}) fails to compile with -std=c++2a

[ville.voutilainen at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94890

--- Comment #7 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
..and as expected, std::optional is broken the same way.