Options propagation

### Prerequisites

- [x] I have written a descriptive issue title
- [x] I have searched existing issues to ensure the issue has not already been raised

### Issue

By default, the generated templates [pass `options` to the autoloader](https://github.com/fastify/fastify-cli/blob/main/templates/app-ts-esm/src/app.ts#L31), which are then propagated to all loaded plugins.
This behavior can cause errors with external plugins if they receive unexpected properties or values in `options`

Here’s an example of the issue in the demo repository:
https://github.com/fastify/demo/issues/119

Should we continue to do this?
Or simply add doc to prevent this kind of errors in the future?