Merge "TaskOverlayFactoryGo: Keep persistent instance of AssistContentRequester" into sc-dev am: b7cecf8a90 am: 47229933c7

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14803962

Change-Id: I6a22b27f5d28fd2660d175b8c39d2376a5d2a32b