test: adapt tests for attribute-level default solution

test/mv/accounts/user_policies_test.exs

@@ -354,9 +354,14 @@ defmodule Mv.Accounts.UserPoliciesTest do
         })
         |> Ash.Changeset.set_context(%{private: %{ash_authentication?: true}})
 
-      {:ok, user} = Ash.create(changeset)
+      {:ok, user} = Ash.create(changeset, domain: Mv.Accounts)
 
       assert user.email
+
+      # Verify that default "Mitglied" role was assigned
+      {:ok, user_with_role} = Ash.load(user, :role, domain: Mv.Accounts, authorize?: false)
+      assert user_with_role.role != nil
+      assert user_with_role.role.name == "Mitglied"
     end
 
     test "register_with_rauthy works without actor via AshAuthentication bypass" do