Merge "Enabling plugins on Launcher debug builds" into sc-dev am: 14faee73e7

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/13418219

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I23ee265117ca1a4d324a3c0691657bca023e1f5c