[libcxx-commits] [libcxx] [libc++][test] Move the SFINAE test for return types of `quoted` to `libcxx/test/libcxx/` (PR #157026)

[A. Jiang via libcxx-commits]

frederick-vs-ja wrote:

> > I'm not sure whether this is worthy filing an LWG issue.
> 
> There is implementation divergence, no? That seems like a good reason to ask LWG whether they would like to specify this any further or not.

Opened [LWG4364](https://cplusplus.github.io/LWG/issue4364).

https://github.com/llvm/llvm-project/pull/157026