I filed this bug 2 weeks ago but no one from the Next.js team has taken a look https://github.com/vercel/next.js/issues/72787 and I was curious if I am just doing something wrong now in Next.js 15? I used to be able to have app/resources/sitemap.ts and a sitemap would be created under https://example.com/resources/sitemap/0.xml for example.