Merge "Disables notification drag & drop." into tm-dev am: 1c121789

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18635694



Change-Id: I94820fe56f950700e2e651eb77f5db9c28660757
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>