Set NetworkType UNKNOWN if Not Camped/Registered am: 5066192117

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Iwlan/+/17775001

Change-Id: I67bb534fd8f37b44245dd73d4fd069b8bc9e242b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>