[llvm-branch-commits] [clang] [libcxx] release/21.x: Revert "[libc++][Clang] Added explanation why is_constructible evaluated to false. Updated the diagnostics checks in libc++ tests. (#144220)" (PR #151695)

[Tobias Hieta via llvm-branch-commits]

tru wrote:

Reading your comment @cor3ntin, it seems like we shouldn't merge this just yet? Can we get confirmation on how to handle this backport from both the clang and the libc++ side?

https://github.com/llvm/llvm-project/pull/151695