Merge "libprocessgroup: Add MaxActivationDepth" into main am: 3d54c32e33

Original change: https://android-review.googlesource.com/c/platform/system/core/+/3114673

Change-Id: I77a5f8b69e37846840bda745fbb1242f294c5293
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>