Skip handling input while the user is still locked

- None of the gestures work when the user is locked so
  we can just skip them.

Bug: 143107728
Test: Manual
Change-Id: I2661d58269f7eccbfcd2214792c128b432e0347c
(cherry picked from commit fc8c975880)

quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java

@@ -416,6 +416,9 @@ public class TouchInteractionService extends Service implements
             Log.e(TAG, "Unknown event " + ev);
             return;
         }
+        if (!mDeviceState.isUserUnlocked()) {
+            return;
+        }
 
         Object traceToken = TraceHelper.INSTANCE.beginFlagsOverride(
                 TraceHelper.FLAG_ALLOW_BINDER_TRACKING);