[automerger skipped] Enable widgets in launcher preview flag am: 21faa2a3de -s ours

am skip reason: Merged-In I2d02d7a1328ed9ef5d3dfbec090dc1f9908dd527 with SHA-1 1ce4353359 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15822859

Change-Id: Icaffc1818b602d782d22673843ac592a766066e9