Merge "Add education tip to widget picker." into sc-dev am: 1e849a95f9 am: ec1c9a73ba

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14137345

Change-Id: I8de490c27efc72d931c06b5fec9f499bdd8a263e