Merge "Unifying scroll calculation logic for both widgets and apps recycler...

Merge "Unifying scroll calculation logic for both widgets and apps recycler view Also using itemType instead of item object for widget size cache" into tm-qpr-dev am: 5069964e am: 67d79af8

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/18763224



Change-Id: Ic9c5e84835e0c7c714540d8c914486255dbe9dee
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>