Ignore recents transition if there are no closing tasks am: 6f7e15ff

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/23909000



Change-Id: I25d6e8f6b1cadf1a102980258dd5842f4e7277b9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>