Add a setting for the volume hush gesture

Bug: 75252670
Test: make -j20 RunSettingsRoboTests
Change-Id: I699aeec54eb516931b6d7c5b3fc864b169015c2f
diff --git a/res/xml/gestures.xml b/res/xml/gestures.xml
index f136ec7..7083a31 100644
--- a/res/xml/gestures.xml
+++ b/res/xml/gestures.xml
@@ -50,4 +50,9 @@
         android:title="@string/ambient_display_pickup_title"
         android:fragment="com.android.settings.gestures.PickupGestureSettings" />
 
+    <Preference
+        android:key="gesture_prevent_ringing_summary"
+        android:title="@string/gesture_prevent_ringing_screen_title"
+        android:fragment="com.android.settings.gestures.PreventRingingGestureSettings" />
+
 </PreferenceScreen>