Add a separated flag for Volume Panel large screen

Flag: aconfig new_volume_panel STAGING
Test: manual on the phone and tablet
Bug: 325019492
Change-Id: I229d11cba32257d094079cbae222f5f17d924d15
diff --git a/packages/SystemUI/res/values/config.xml b/packages/SystemUI/res/values/config.xml
index 65c69f7..beaa708 100644
--- a/packages/SystemUI/res/values/config.xml
+++ b/packages/SystemUI/res/values/config.xml
@@ -1010,4 +1010,7 @@
 
     <!--  Whether to use a machine learning model for back gesture falsing. -->
     <bool name="config_useBackGestureML">true</bool>
+
+    <!-- Whether volume panel should use the large screen layout or not -->
+    <bool name="volume_panel_is_large_screen">false</bool>
 </resources>