Merge "Prevent adding methods in WindowInsetsAnimationController" into sc-v2-dev am: 4fba1c4453 am: a1c5970293

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15746916

Change-Id: I5224d890d1632148fd2a89a39d8b68c0d7386311