Merge "Polish the gesture navigation tutorial sandbox" into sc-dev am: cfa0baeca6 am: 07df599598

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14924450

Change-Id: Ib12bfca3a329b7a77062d106e8060149c58d90e7