Merge "Migrate from android::String isEmpty to empty" into main am: 594656ed...

Merge "Migrate from android::String isEmpty to empty" into main am: 594656ed am: c4e9e8e7 am: 0cd042ea am: ff7c699b

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2745913



Change-Id: Ib0eef282b2834f4218352e16c21eeebfb2de6c7b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>