Update VPN app dialog message to include version code

Add the string back to AppDialog in VPN

Bug: 372179228
Change-Id: I2f45515623cd7d0fbaf4a17026d040107b804fed
Test: verify the UI.
Flag: EXEMPT bugfix

src/com/android/settings/vpn2/AppDialog.java

@@ -56,7 +56,7 @@ class AppDialog extends AlertDialog implements DialogInterface.OnClickListener {
     @Override
     protected void onCreate(Bundle savedState) {
         setTitle(mLabel);
-        setMessage(getContext().getString(R.string.vpn_version, mPackageInfo.versionName));
+        setMessage(getContext().getString(R.string.vpn_version_info, mPackageInfo.versionName));
 
         createButtons();
         super.onCreate(savedState);