Merge "Add a content overlay for auto-enter w/o a source hint rect" into sc-dev am: 8b74cbbf96

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14102623

Change-Id: Ib62f6bc057d280e6009b1f37e7dd2db9a8beea2a