Merge "Migrate from android::String isEmpty to empty" into main am: 8a21830735 am: 8f1eea8f9d

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2707853

Change-Id: I8049deabf86fac9a39f3b8a37ba50c138481221f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>