Merge "NIU Actions: Add strings for assistant error dialogs and feature tooltip" into sc-dev am: b598e968e2

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15191924

Change-Id: Ifb9f426142ea5d30377d6e4d7293e4976a2b6ec2