[Bug]: Can not build NextJs because the error - Type error: Cannot find name 'Deno'

### Problem description

Follow the [demo guide](https://docs.deno.com/examples/next_tutorial/) and [deploy guide](https://deno.com/blog/nextjs-on-deno-deploy), I want to try to do. Then I want to create an api to get Deno version which use `Deno.version.deno`. It works with dev mode. Unfortunately, get error `Type error: Cannot find name 'Deno'`

### Steps to reproduce

Step 1: Follow the guide https://docs.deno.com/examples/next_tutorial/
Step 2: So I create an Nextjs api at the file `app/api/hello/route.rs`:

```ts
export async function GET (req: Request) {
return new Response(`Hello, from Deno v${Deno.version.deno}!`);
};
```
Step3: Try to build and become a failure with `deno task build`. It tells that:

```terminal
$ deno task build

Creating an optimized production build ...
✓ Compiled successfully
Linting and checking validity of types ..Failed to compile.

./app/api/hello/route.ts:2:43
Type error: Cannot find name 'Deno'.

1 | export async function GET (req: Request) {
> 2 | return new Response(`Hello, from Deno v${Deno.version.deno}!`);
| ^
3 | };
Next.js build worker exited with code: 1 and signal: null
```

### Expected behavior

I expect there is no error like that.

### Environment

- Deno 2.2.3 (stable, release, aarch64-apple-darwin)
v8 13.4.114.11-rusty
typescript 5.7.3
- Mac Sequoia

### Possible solution

_No response_

### Additional context

_No response_

Reproduce the failure in app/api/hello/route.ts by following the linked Next.js guides and running deno task build. Inspect how the build handles the Deno reference in that route; done means the production build completes without the Cannot find name 'Deno' error.

Written by the indexing model from the issue text.