Merge "Remove TaskFragment Shell transition collection when startActivity" into tm-qpr-dev am: bccd7f9dce

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20419286

Change-Id: Idf8a3eed89b76e4e052c8fb4410b56a15de23fa1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>