Merge "Add a new string for widget configuration drop target" into sc-qpr1-dev...

Merge "Add a new string for widget configuration drop target" into sc-qpr1-dev am: 52c93d17 am: 70adfb5e

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15992145

Change-Id: Ie04a719b6859e107fd42e50eb38abfa7340d7c0d