Require MODIFY_PHONE_STATE to start EuiccUiDispatcherActivity.

Bug: 129269260
Test: test on phone
Change-Id: I9cf6b83b31cc67961efee221ea570409af8de5ff
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 480aa5c..b4b4053 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -436,7 +436,8 @@
 
         <!-- Handler for EuiccManager's public-facing intents. -->
         <activity android:name=".euicc.EuiccUiDispatcherActivity"
-            android:theme="@android:style/Theme.NoDisplay">
+            android:theme="@android:style/Theme.NoDisplay"
+            android:permission="android.permission.MODIFY_PHONE_STATE">
             <!-- Max out priority to ensure nobody else will handle these intents. -->
             <intent-filter android:priority="1000">
                 <action android:name=