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

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

Change-Id: I414313712a8edadd78d0f665cbbe572d90af9e10
Signed-off-by: Automerger Merge Worker <[email protected]>