Make the keyboard sound on by default for xlarge screens.

Also change the name of the default value for re-correction for
consistency with other constant names.

Bug: 3426884

Change-Id: I615ba640fb17e6d7514b8a0e4f52028eb0e23908
diff --git a/java/res/xml/prefs.xml b/java/res/xml/prefs.xml
index 9ea801e..d031415 100644
--- a/java/res/xml/prefs.xml
+++ b/java/res/xml/prefs.xml
@@ -38,6 +38,7 @@
         <CheckBoxPreference
                 android:key="sound_on"
                 android:title="@string/sound_on_keypress"
+                android:defaultValue="@bool/config_default_sound_enabled"
                 android:persistent="true"
                 />
 
@@ -53,7 +54,7 @@
                 android:title="@string/prefs_enable_recorrection"
                 android:summary="@string/prefs_enable_recorrection_summary"
                 android:persistent="true"
-                android:defaultValue="@bool/default_recorrection_enabled"
+                android:defaultValue="@bool/config_default_recorrection_enabled"
                 />
 
         <ListPreference