unittest: fix le scanning manager am: 93b8be4a

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2260704



Change-Id: Ic394f8bd697994fa7eb57484552376a6f31f1b19
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>