Change to "Show language switch key" option

This change deprecates "Suppress language switch key".

Bug: 7037410
Change-Id: I1bc90877b4d2ee9364728959fd680dcb5b22ecbf
diff --git a/java/res/xml/prefs.xml b/java/res/xml/prefs.xml
index f7c993d..3e83fc0 100644
--- a/java/res/xml/prefs.xml
+++ b/java/res/xml/prefs.xml
@@ -108,10 +108,11 @@
                 android:persistent="true"
                 android:defaultValue="true" />
             <CheckBoxPreference
-                android:key="pref_suppress_language_switch_key"
-                android:title="@string/suppress_language_switch_key"
+                android:key="pref_show_language_switch_key"
+                android:title="@string/show_language_switch_key"
+                android:summary="@string/show_language_switch_key_summary"
                 android:persistent="true"
-                android:defaultValue="false" />
+                android:defaultValue="true" />
             <CheckBoxPreference
                 android:key="pref_include_other_imes_in_language_switch_list"
                 android:title="@string/include_other_imes_in_language_switch_list"