Enable message admin by default on new installs

Now that we have the missing revert we can do this

sql/civicrm_data/civicrm_extension.sqldata.php

@@ -69,4 +69,8 @@
       'full_name' => 'civiimport',
       'name' => 'Civi-Import',
     ],
+    [
+      'full_name' => 'message_admin',
+      'name' => 'Message Administration',
+    ],
   ]);