Apply new scrolling interaction in wallpaper picker. am: 46644b9ee4 am: 43b06476f8

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/WallpaperPicker2/+/11788117

Change-Id: I8774e21ab35766b05b367d6b0f7317f9300e55d8