Merge "Fix NPE inside REcyclerViewFastScroller" into sc-dev am: 8c0f8fba9c am: 32fbf28ecf am: f074105648

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14966513

Change-Id: I048993c80814c8c4851d94916a6188aeca2103db