Merge "Migrate from android::String isEmpty to empty" into main am: 8a218307...

Merge "Migrate from android::String isEmpty to empty" into main am: 8a218307 am: 8f1eea8f am: 6df90de7 am: 3dbb0cba

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



Change-Id: I1235347a2c6f19be90001bd6c481de8b6053ba1a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>