Merge "libc++fs is part of libc++ now." into main am: 80694005 am: 7f66e02a

Original change: https://android-review.googlesource.com/c/platform/packages/modules/DnsResolver/+/3128673



Change-Id: I027001a86c338df20c1048edf59727c6ce35b050
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>