Merge "Add onEndCallback to ContainerAnimationRunner" into tm-qpr-dev am: 83683829f7

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/21750179

Change-Id: Iebc90a935e9bbdd865f2fd03b531e5f5bcfefa66
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>