feat: classic ui account deletion

crates/adapters/http-axum/src/html/users.rs

@@ -236,6 +236,9 @@ pub async fn post_delete_user(
         // An admin removing their own account ends their own session too.
         Ok(()) if own => super::auth::get_logout(State(state)).await.into_response(),
         Ok(()) => axum::response::Redirect::to("/users").into_response(),
+        // Same as other forbidden classic actions: a plain 403, not a redirect
+        // to a page that would not show the error.
+        Err(e @ DomainError::Forbidden(_)) => crate::errors::domain_error_response(e),
         Err(e) => axum::response::Redirect::to(&format!(
             "/users/{target}?error={}",
             crate::html::helpers::encode_domain_error(&e)