Merge "Revert "Treat process group creation failure due to a dead process as non-fatal"" into udc-qpr-dev am: e874f6b079

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24735115

Change-Id: I89f5cefcf8332e86995b80d0a067520dec0b6f15
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>