Fix AttributionSource usage in WifiAware am: fee5509321

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Wifi/+/21549702

Change-Id: I1d4513c451a9a957ef0858d5d5c1ab8e8fedd514
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>