Set sQuickScrubEnabled = false in onDestroy()

When the touch interaction service is disconnected, let's make sure
we cleanup so we don't get in a state where all touches are ignored.

Bug: 72444652
Change-Id: I089ad63f9f855651f305c4650c99743d3bde3a94
diff --git a/quickstep/src/com/android/quickstep/TouchInteractionService.java b/quickstep/src/com/android/quickstep/TouchInteractionService.java
index fe18703..509ffa9 100644
--- a/quickstep/src/com/android/quickstep/TouchInteractionService.java
+++ b/quickstep/src/com/android/quickstep/TouchInteractionService.java
@@ -185,6 +185,7 @@
     @Override
     public void onDestroy() {
         sConnected = false;
+        sQuickScrubEnabled = false;
         super.onDestroy();
     }