Merge "Verify enableOnBackInvokedCallback at the app-level if ActivityInfo is null" into udc-dev am: 379a3d53 am: 2f43da1e am: 27753efb

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22852616



Change-Id: Id9af472558f0be68fad4500adb6b46c22a640540
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>