Environment

using h3 v2 directly from repo "./src/index.ts" and bun 1.2.18

Reproduction

import { H3, serve } from "./src/index.ts";

const app = new H3();

app.get("/", (e) => {
  return new TextEncoder().encode("hello");
});

console.log(
  await fetch(serve(app).url!).then((r) => r.headers.get("content-type")),
);

Describe the bug

application/octet-stream is unexpected. when opening in a browser it downloads a file.

Additional context

in node it doesn't download and content-type is null

Logs