Merge "Fixing ModelPreload cancelling existing load" into sc-qpr1-dev am: 8782ad4f99 am: bf22a7effd

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

Change-Id: I9afb8a7e7cf562bc5ae646421342bf86e3559420