Merge "Fixing ModelPreload cancelling existing load" into sc-qpr1-dev am: 8782ad4f99 am: 04c4f94223 am: 10a305ef62

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15524186

Change-Id: Iadeb22c5e1dcf1c90e9f6edcdca9e34151cadf30