[bazel] fix layering check to run bazel with 16.x

Preparation to update bazel builder to use LLVM 16 release
where layering check was enabled https://reviews.llvm.org/D132779

Current setup missed some backsliding in layering check as it has
only on for projects with the check enforced.

Disabled it completely for libc and fixed for DWARFLinkerParallel.
It would be great to re-enable it for libc later.