Merge "Revert "Revert "Migrating all model tests to Instrumentation tests""" into sc-v2-dev am: 667bda8448

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15696989

Change-Id: Id456f71d5772f565f8ff37d2fca99d4833529e01