Merge "Revert "Drop all path-related methods from android::String8"" into main...

Merge "Revert "Drop all path-related methods from android::String8"" into main am: acc7ff19 am: f7bb2d38

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2745822



Change-Id: I63a03da3225332b54d8993a910e14f8397976386
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>