Merge "Add IDs to buttons in 3 button nav for Taskbar" into sc-v2-dev am: 3fcc02b8dc

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15027506

Change-Id: I0a9ba369f2a852ec1afd4e39663f339db1316d9b