Merge "Release stretch overscroll when new items are added." into sc-v2-dev am: f0786d5d90 am: 80bad32262

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16468159

Change-Id: I7d7bf5effce155a9544c22311d1e9caac8e7e5b2