Merge "libc++fs is part of libc++ now." into main am: e7c335232f am: 91ef322877

Original change: https://android-review.googlesource.com/c/platform/system/tools/sysprop/+/3128195

Change-Id: I92fd52b152dddd489c47b2a7ec073dc6da396ea1
Signed-off-by: Automerger Merge Worker <[email protected]>