Don't allow importing contacts to accounts passed in by intent unless it is valid am: c8c222bc6c am: 8c7f6ee2ad

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

Change-Id: I859dda621ff7ccf1fa2d5bc64d913535f49081be
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>