[Bug libstdc++/79195] make_array should not ask for common_type when the type is explicitly specified

[rs2740 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79195

--- Comment #1 from TC <rs2740 at gmail dot com> ---
While we are here, the `return {{forward<_Types>(__t)...}};` in the body should
call std::forward qualified.