vite scanner trips on exported svelte snippets

[dominikg]

Describe the bug

When a .svelte file exports a snippet through its <script module> block, it can cause a fail in the optimizer scan due to an export of something that isn't defined in the script ({#snippet foo()} in the template defines it.
https://svelte.dev/docs/svelte/snippet#Exporting-snippets

downstream issue: sveltejs/vite-plugin-svelte#1066

error:

(!) Failed to run dependency scan. Skipping dependency pre-bundling. Error:   Failed to scan for dependencies from entries:
  /home/projects/github-odonlwum-5xwrmunq/index.html

  ✘ [ERROR] "foo" is not declared in this file

    script:/home/projects/github-odonlwum-5xwrmunq/src/Snippet.svelte?id=0:2:12:
      2 │    export { foo };
        ╵             ~~~


    at failureErrorWithLog (/home/projects/github-odonlwum-5xwrmunq/node_modules/esbuild/lib/main.js:1457:15)

The error does not happen if the script block uses lang=ts <script module lang="ts">

Reproduction

https://stackblitz.com/edit/github-odonlwum-5xwrmunq?file=src%2FSnippet.svelte,src%2FApp.svelte,package.json,src%2Fsnippet-reexport.js

Steps to reproduce

npm i && npm run dev

System Info

not relevant

Used Package Manager

npm

Logs

No response

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