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: 8744e4d3

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

Change-Id: Ifa6007c2a6b4d30139c5ab367b0402d0877acdf9