Merge "Force initialize task stack callback for gesture modes on init" into sc-dev am: e1a5d6bb1b am: af44c7f976

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14754620

Change-Id: Ie5912e154cdedd2dea6c69bb29505b20896db0d5