Added ability to escape role "External Auth ID" commas

- Using a backslash in this field before a comma.
- Could potentially (Although unlikely) be a breaking change.

For #3405

database/factories/Auth/RoleFactory.php

@@ -23,6 +23,7 @@ class RoleFactory extends Factory
         return [
             'display_name' => $this->faker->sentence(3),
             'description'  => $this->faker->sentence(10),
+            'external_auth_id' => '',
         ];
     }
 }