Fix ErrorPolicyManager#getMostRecentDataFailCause() am: 568d2203c3 am: fa88a863e2 am: e28b7ae42e

Original change: https://android-review.googlesource.com/c/platform/packages/services/Iwlan/+/2210019

Change-Id: I43515f93f331d2535dc510f05419637536376dfd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>