Merge "Implementing support for item diffing instead of creating out the...

Merge "Implementing support for item diffing instead of creating out the complete UI on every update" into tm-dev am: 4bd36a37

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/18116442



Change-Id: Ie83658a6e48cce6b8b67121de639a280f34fbc69
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>