New data stack wait for data disconnected on all subs for APM on am: ef824018

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/18759340



Change-Id: If703431667279e4094aa6fda0d61f0d97d57ea74
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>