Merge "libc++fs is part of libc++ now." into main am: 984b51475b am: 9739d55232

Original change: https://android-review.googlesource.com/c/platform/packages/modules/NeuralNetworks/+/3128196

Change-Id: Ibebfd0f1639d85ea9929e87229c16675b14e61ea
Signed-off-by: Automerger Merge Worker <[email protected]>