Don't allow importing contacts to accounts passed in by intent unless it is valid am: c8c222bc6c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Contacts/+/24309801

Change-Id: I38374683d59f8937c4e4ed3ae92f91b50d38a2f5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>