fix: failing tests

test/mv_web/live/join_live_email_failure_test.exs

@@ -28,16 +28,17 @@ defmodule MvWeb.JoinLiveEmailFailureTest do
 
     {:ok, view, _html} = live(conn, "/join")
 
-    view
-    |> form("#join-form", %{
-      "email" => "fail#{System.unique_integer([:positive])}@example.com",
-      "first_name" => "Jane",
-      "last_name" => "Doe",
-      "website" => ""
-    })
-    |> render_submit()
+    # Use the HTML returned by render_submit (updated DOM including flash)
+    html =
+      view
+      |> form("#join-form", %{
+        "email" => "fail#{System.unique_integer([:positive])}@example.com",
+        "first_name" => "Jane",
+        "last_name" => "Doe",
+        "website" => ""
+      })
+      |> render_submit()
 
-    html = render(view)
     # Error message is translated; accept English or German wording
     assert html =~ "could not send" or html =~ "confirmation email" or
              html =~ "konnte nicht" or html =~ "Bestätigungs-E-Mail"