[Bug libstdc++/83981] vector::resize(size_type) should not require T to be CopyInsertable when std=c++14

[dtrebbien at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83981

--- Comment #3 from Daniel Trebbien <dtrebbien at gmail dot com> ---
I would like to make a patch for this and PR 83982 if that's okay.