Change WepNetworkDialogActivity exported="true".

Test: Visual Test
Fix: 327310887
Change-Id: Iecc2910eda75f3aad60f4a876b0e1d54d203cd74
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 11bf4c1..c15f77f 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -5137,8 +5137,9 @@
 
         <activity
             android:name="com.android.settings.network.WepNetworkDialogActivity"
-            android:exported="false"
-            android:theme="@style/Theme.SpaLib.Dialog">
+            android:exported="true"
+            android:theme="@style/Theme.SpaLib.Dialog"
+            android:permission="android.permission.NETWORK_SETTINGS">
         </activity>
 
         <!-- This is the longest AndroidManifest.xml ever. -->