Disable lift-to-wake when always-on is checked

The setting has little to no meaning when AOD is on.

Test: make
ROBOTEST_FILTER=AmbientDisplayAlwaysOnPreferenceControllerTest
RunSettingsRoboTests -j
Bug:62391405
Change-Id:If5492227755ca81ec0bcf921a81e2bfd33a85b9c

src/com/android/settings/gestures/GesturePreferenceController.java

@@ -61,6 +61,8 @@ public abstract class GesturePreferenceController extends PreferenceController
                         ? R.string.gesture_setting_on
                         : R.string.gesture_setting_off);
             }
+            // Different meanings of "Enabled" for the Preference and Controller.
+            preference.setEnabled(canHandleClicks());
         }
     }
 
@@ -81,4 +83,8 @@ public abstract class GesturePreferenceController extends PreferenceController
     protected abstract String getVideoPrefKey();
 
     protected abstract boolean isSwitchPrefEnabled();
+
+    protected boolean canHandleClicks() {
+        return true;
+    }
 }

src/com/android/settings/gestures/PickupGesturePreferenceController.java

@@ -76,4 +76,9 @@ public class PickupGesturePreferenceController extends GesturePreferenceControll
                 Settings.Secure.DOZE_PULSE_ON_PICK_UP, enabled ? 1 : 0);
         return true;
     }
+
+    @Override
+    public boolean canHandleClicks() {
+        return mAmbientConfig.pulseOnPickupCanBeModified(mUserId);
+    }
 }