fix: Target loaders toward build/ directory when fetching submodule data

[OLILHR]

fixes

Error loading EBDs Error: ENOENT: no such file or directory, scandir '.../entscheidungsbaumdiagramm/static/ebd'
    at readdirSync (node:fs:1502:26)
    at getEbds (file://.../entscheidungsbaumdiagramm/.svelte-kit/output/server/chunks/format-version-loader.js:7:28)
    at load (file://.../entscheidungsbaumdiagramm/.svelte-kit/output/server/entries/pages/_layout.server.ts.js:4:16)
    at load_server_data (file://.../entscheidungsbaumdiagramm/.svelte-kit/output/server/index.js:554:42)
    at file://.../entscheidungsbaumdiagramm/.svelte-kit/output/server/index.js:2023:24 {
  errno: -2,
  code: 'ENOENT',
  syscall: 'scandir',
  path: '.../entscheidungsbaumdiagramm/static/ebd'
}

[github-actions]

Azure Static Web Apps: Your stage site is ready! Visit it here: https://white-water-047c71203-72.westeurope.5.azurestaticapps.net

[hf-kklein]

Lgtm