Merge "Persist prediction cache on every update" into rvc-dev am: 7f1f8030...

Merge "Persist prediction cache on every update" into rvc-dev am: 7f1f8030 am: 53d65ac8 am: 50dfa54b am: 8d0bd929

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

Change-Id: Ie9886d749217b5003764f7a9432997b653d7388f