SvelteKit demo is broken due to "type" not being set in pkg json

**Describe the bug**
In the @ffmpeg/util package, there is no ```json "type": "module"```, Due to this vite breaks while building the code because it needs esm modules to run.

**To Reproduce**
Clone the sveltekit example, `npm i`, and `npm run dev`.

**Expected behavior**
The example should work when I do `npm run dev`

**Screenshot**

**Desktop (please complete the following information):**
- OS: [e.g. iOS] - MacOS 14.6.1
- Browser [e.g. chrome, safari] - Chrome
- Version [e.g. 22] - 128

**Additional context**
Setting ```json "type": "module"``` in util package's package.json, the build worked.