Merge "Merge "Put activity-start into its own transition when recents collecting" into udc-dev am: 70941199 am: 962b2744" into udc-d1-dev-plus-aosp am: 2a5713d2 am: b4739b9d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22873334



Change-Id: Ieadc498d28b24cedd712eee7c4dd2dbd7ca23566
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>