Merge "Fixed device restart caused by starting Activity under split-screen...

Merge "Fixed device restart caused by starting Activity under split-screen root task." into main am: 2417c31f

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3079172



Change-Id: I838b3571cf0c7acc60d0d568707bf957241e3649
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>