Major Changes

• #11859 3804711 Thanks @florian-lefebvre! - Changes the default tsconfig.json with better defaults, and makes src/env.d.ts optional

  Astro's default tsconfig.json in starter examples has been updated to include generated types and exclude your build output. This means that src/env.d.ts is only necessary if you have added custom type declarations or if you're not using a tsconfig.json file.

  Additionally, running astro sync no longer creates, nor updates, src/env.d.ts as it is not required for type-checking standard Astro projects.

  To update your project to Astro's recommended TypeScript settings, please add the following include and exclude properties to tsconfig.json:

  {
      "extends": "astro/tsconfigs/base",
     "include": ["**/*",...