set translatable as false for config file

set translatable as false for string type config.

Test: Manually
Bug: 118809382
Change-Id: Iaac1fd56d8f869f796dbb58c8480d65f2566f2f4
diff --git a/res/values/config.xml b/res/values/config.xml
index 38a0b18..7dc0d52 100644
--- a/res/values/config.xml
+++ b/res/values/config.xml
@@ -249,5 +249,5 @@
     <bool name="config_support_telephony_audio_device">false</bool>
 
     <!-- Intent action to launch target emergency app. -->
-    <string name="config_emergency_app_intent"></string>
+    <string name="config_emergency_app_intent" translatable="false"></string>
 </resources>