Add an uncaught exception handler in 844-exception. am: 1a9d41ccb0 am: 39e39d58bf am: 605b96e32f

Original change: https://android-review.googlesource.com/c/platform/art/+/2270947

Change-Id: I86f4a7ea7f6189f3b6355276fbd375522247e5e7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>