[libcxx-commits] [libcxx] [libc++] Fix insertion and input-only range handling for `vector` (PR #116001)

[A. Jiang via libcxx-commits]

frederick-vs-ja wrote:

> Please split adding `std::move` from any algorithm changes.

I think I should split out the handling for input-only iterators, which is more than adding `std::move`.

https://github.com/llvm/llvm-project/pull/116001