unittest: fix le scanning manager am: 23dc755b

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/20245844



Change-Id: Ic0235a15197f7b525324d5ca73d2e94da49b14d6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>