Merge "Fix NPE in AccessNetworksManager" into tm-dev am: b6463ce4 am: 53872407

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/18105724



Change-Id: I08e57608f0958f019c7a78e6ba2706cb1dd65c3d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>