Do not register lift when sensor is not present

am: 0a410d3a6c

Change-Id: I4dd5483a7ef208eb65a1690ed6c5182923ccd02e

packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardLiftController.kt

@@ -67,6 +67,9 @@ class KeyguardLiftController constructor(
     }
 
     private fun updateListeningState() {
+        if (pickupSensor == null) {
+            return
+        }
         val onKeyguard = keyguardUpdateMonitor.isKeyguardVisible &&
                 !statusBarStateController.isDozing