Merge "AssistContentRequester move binder call to background thread." into sc-dev am: 8c46bba98e am: f40d4452d8

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14801431

Change-Id: I8eae7b2f787f346c177f444622828b239d722e0c