Merge "[AA+ Search] Add logging for header search icon tapping events." into sc-v2-dev am: c919e67a9b

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/16223390

Change-Id: I3749eeff3e3f4399fb485f0c67962e74cb967c05