Show dates in european format

test/mv_web/member_live/index_custom_fields_display_test.exs

@@ -231,8 +231,8 @@ defmodule MvWeb.MemberLive.IndexCustomFieldsDisplayTest do
     conn = conn_with_oidc_user(conn)
     {:ok, _view, html} = live(conn, "/members")
 
-    # Date should be displayed in readable format
-    assert html =~ "1990" or html =~ "1990-05-15" or html =~ "15.05.1990"
+    # Date should be displayed in European format (dd.mm.yyyy)
+    assert html =~ "15.05.1990"
   end
 
   test "formats email custom field values correctly", %{conn: conn, member1: _member1} do