Add extra error checking for Home Gesture Tutorial

Add an error message for when a user swipes horizontally from the middle
of the screen.

Fix: 275386244
Test: Manual
Change-Id: If4d0dd412c3d1625da18f9c068e5fd7b281548c5
diff --git a/quickstep/src/com/android/quickstep/interaction/HomeGestureTutorialController.java b/quickstep/src/com/android/quickstep/interaction/HomeGestureTutorialController.java
index 99d417e..73a08c3 100644
--- a/quickstep/src/com/android/quickstep/interaction/HomeGestureTutorialController.java
+++ b/quickstep/src/com/android/quickstep/interaction/HomeGestureTutorialController.java
@@ -92,6 +92,7 @@
                     case BACK_COMPLETED_FROM_RIGHT:
                     case BACK_CANCELLED_FROM_LEFT:
                     case BACK_CANCELLED_FROM_RIGHT:
+                    case BACK_NOT_STARTED_TOO_FAR_FROM_EDGE:
                         showFeedback(R.string.home_gesture_feedback_swipe_too_far_from_edge);
                         break;
                 }