Merge "Fix full widgets picker fast scroller height." into sc-dev am: 17385ce33e am: 99623596ac am: c6fc15d9cb

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14683794

Change-Id: I20f3c0e2ec4029a8236af84a5c56a660cda8ac9b