Fix crash when doing on-screen home gesture while tutorial is open.

This crash happens when launcher is running in a different process than touchpad tutorial which always runs in sysui's user 0 process.
Fix is to prevent touchpad tutorial from showing up in recents so launcher doesn't have to try to access data of another user. Fortunately live tile doesn't have issue with other-user activity.

Test: on HSUM device: open tutorial and do home gesture on the screen - nothing crashes
Test: non-HSUM: go to secondary user, open tutorial, do home gesture on the screen
Fix: 382021417
Flag: com.android.systemui.shared.new_touchpad_gestures_tutorial
Change-Id: I44f82fd9329ab6f0dfe791976710148e466a198b