Merge "Always create root task for ACTIVITY_TYPE_RECENTS" into udc-dev am: 4645c5fb

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22796614



Change-Id: If225c23e9c97f81908a98f3fce127f76f670415e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>