[Bug c++/106759] __has_builtin doesn't report __is_nothrow_constructible as supported

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106759

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Marek Polacek from comment #2)
> Are you going to post the patch or should I?

Can you do it? I don't have time to add a testcase and to double check all of
the RIDs. I just did the few I saw.