[Bug]: Worker is not defined

### Problem description

I am creating workers for slow background tasks locally Deno is working properly. When deploying it says "Worker is not defined"
Do I have to do something special to activate Workers for deployment?

### Steps to reproduce

// main.ts
const worker = new Worker(new URL("./worker.ts", import.meta.url).href, {
type: "module",
});
// worker.ts
self.onmessage = async (event: MessageEvent) => {
const { url, id } = event.data;
logger.info(`Worker started for ${id}`
self.postMessage({ id });
};

### Expected behavior

No error during deployment

### Environment

**Deno:**
deno 2.1.9 (stable, release, x86_64-unknown-linux-gnu)
v8 13.0.245.12-rusty
typescript 5.6.2
**System WSL:**
5.15.167.4-microsoft-standard-WSL2 #1 SMP Tue Nov 5 00:21:55 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

### Possible solution

_No response_

### Additional context

_No response_

Start with the deployment using the reported main.ts and worker.ts examples, then compare its runtime environment with local Deno. Reproduce the Worker is not defined error and inspect the deployment entry point or runtime documentation available for this project. Done means the deployment behavior is clarified and the reported worker usage either works without the error or has an explicit documented limitation.

Written by the indexing model from the issue text.