Troubles introducing the vite-plugin-static-copy plugin

Hi guys,

I wanted to implement the [TTS audio feature](https://github.com/FlowFuse/node-red-dashboard/issues/1560) request, but it is a bit more complex as I thought. Thought it to be a fun thing to implement during the Christmas madness, but that doesn't seem to be the case unfortunately...

1. Seems the Web Speech API has some serious cross-browser issues, as I experienced already after a couple of minutes...
2. To avoid having to solve all that cross-browser stuff myself, I wanted to use the [easy-speech](https://github.com/leaonline/easy-speech/tree/master) npm library. So I added it to the devdependencies in the package.json file.
3. However I do not only need to use that library in my vue frontend code (via the build), but also in the ui-audio node config screen (to show a list of the supported voices).
4. To use that library in the html config screen, I need to download the file from the `resources` folder (see [explanation](https://nodered.org/docs/creating-nodes/resources)).
5. To have the file in the resources folder, I added the following to the vite.config.ts file:
```
...
import { ViteStaticCopy } from 'vite-plugin-static-copy'

export default defineConfig({
resolve: { ... },
plugins: [vue(),
ViteStaticCopy({
targets: [{
src: 'node_modules/easy-speech/dist/*',
dest: 'resources'
}]
}),
...
```
6. However an `npm run build` throws an error `"vite-plugin-static-copy" resolved to an ESM file. ESM file cannot be loaded by require`.
7. Found an explanation of the problem [here](https://github.com/remult/remult/issues/406#issuecomment-2045008314). But that would mean we use a commonJs version of Vite?

So here I am stuck. I don't understand how we can use `import` statements in the vite.config.js file for other modules in that case. And "if" we use the commonjs version of Vite, that [seems](https://vite.dev/guide/troubleshooting.html#vite-cjs-node-api-deprecated) to be deprecated in Vite version 6. Currently we use 5.x

Would really appreciate if somebody could illuminate me about what is the best way to solve this.

Thanks!
Bart