Merge "Enable widgets in launcher preview flag" into sc-v2-dev am: 3ddf5f6d60 am: 39b52f498d

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15054102

Change-Id: Id692f6fa3f19e9a913584c3438d180befe189a7a