Merge "Persist prediction cache on every update" into rvc-dev am: 7f1f8030db am: 9723e7dc34 am: 8f452dff8d

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

Change-Id: I32e55e8efb6664e51b0867cee8bb26aec41c4600