[clang] [llvm] [Clang][coro] Fix `coro.free` in `.resume` clones with `[[clang::coro_await_elidable]]` (PR #207799)

[Chuanqi Xu via cfe-commits]

ChuanqiXu9 wrote:

> Patch working well from my testing.
> 
> Btw is there a chance this will make it to the llvm 23 rc?

I think so. The bar to backport bug fix to rc is not so high.

https://github.com/llvm/llvm-project/pull/207799