fix: sitemap exclude doesn't take into account base url w/ i18n

[hhochart]

🐛 The bug

When using the exclude property to remove specific urls, the pages are not excluded because of the app base url

eg:

export default defineNuxtConfig({
  app: {
    baseURL: '/base/',
  },
  sitemap: {
    exclude: ['/about'],
  },
})

This doesn't work in an i18n setup. For it to work you have to do

    exclude: ['/about', '/hr/about'],

🛠️ To reproduce

https://stackblitz.com/edit/nuxt-starter-dedexxzy?file=nuxt.config.ts

🌈 Expected behavior

I'm expecting the url with the baseURL to be excluded

ℹ️ Additional context

you can run `pnpm build && cat .output/public/sitemap/hr-HR.xml to test