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

Merge "Revert "Revert "Drop all path-related methods from android::String8""" into main am: b2b037d9 am: e4fc1fb9

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2745823



Change-Id: I04afada633c7a48e30e60fce5cbe67f7a55f4dd5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>