Merge "Persist prediction cache on every update" into rvc-dev am: 7f1f8030db am: 53d65ac84c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/12077951

Change-Id: Ic61a5dc313c112b60080fba0e661113548d448e4