Merge "launcher: refactoring variables into arrays" into sc-v2-dev am: 292a993c4a am: ca8a29846d

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15992133

Change-Id: Ia22d7339c83468fb7799d7cb0bb7c168de0389bc