Merge "[Shell-Transition] clean-up some isAnimating call points" into tm-qpr-dev am: 45b54016

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19086047



Change-Id: I19ba26b0f40a0edc0076191db1214d751401a537
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>