Merge "Allow icon add animations when user touches the screen." into sc-v2-dev am: 31a0b39daf am: 82bd8c7c57

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15846608

Change-Id: If3e802440ce7941c02f37f44b4fe33ed295fc39b