Merge "Check if live tile targetSet is null in launchSideTaskInLiveTileModeForRestartedApp" into sc-dev am: fa72529b05

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15184810

Change-Id: I9cb5e7e4ca2269c56ef835eee93bdc5b605583ac