fix(ext/file): resolve unresolved Promise in Blob.stream (denoland#20039

)

This PR fixes some crashing WPT tests due to an unresolved promise.

---
This could be a [stream spec](https://streams.spec.whatwg.org) bug

When `controller.close` is called on a byob stream, there's no cleanup
of pending `readIntoRequests`. The only cleanup of pending
`readIntoRequests` happen when `.byobRequest.respond(0)` is called, it
happens
here:https://github.com/denoland/deno/blob/6ba245fe2570b29e35a4fd296a196a58870b1e3c/ext/web/06_streams.js#L2026
which ends up calling `readIntoRequest.closeSteps(chunk);` in
https://github.com/denoland/deno/blob/6ba245fe2570b29e35a4fd296a196a58870b1e3c/ext/web/06_streams.js#L2070



To reproduce:

```js
async function byobRead() {
  const input = [new Uint8Array([8, 241, 48, 123, 151])];
  const stream = new ReadableStream({
    type: "bytes",
    async pull(controller) {
      if(input.length === 0) {
        controller.close();
        // controller.byobRequest.respond(0); // uncomment for fix 
        return 
      }
      controller.enqueue(input.shift())
    },
  });

  const reader = stream.getReader({ mode: 'byob' });
  const r1 = await reader.read(new Uint8Array(64));
  console.log(r1);
  const r2 = await reader.read(new Uint8Array(64));
  console.log(r2);
}

await byobRead();
```

Running the script triggers:
```
error: Top-level await promise never resolved
```

ext/web/09_file.js

@@ -366,7 +366,11 @@ class Blob {
  const { value, done } = await AsyncGeneratorPrototypeNext(
  partIterator,
  );
- if (done) return controller.close();
+ if (done) {
+ controller.close();
+ controller.byobRequest?.respond(0);
+ return;
+ }
  if (TypedArrayPrototypeGetByteLength(value) > 0) {
  return controller.enqueue(value);
  }

tools/wpt/expectation.json

@@ -4414,8 +4414,16 @@
  "response-consume-empty.any.worker.html": [
  "Consume empty FormData response body as text"
  ],
- "response-consume-stream.any.html": false,
- "response-consume-stream.any.worker.html": false,
+ "response-consume-stream.any.html": [
+ "Read text response's body as readableStream with mode=byob",
+ "Read URLSearchParams response's body as readableStream with mode=byob",
+ "Read array buffer response's body as readableStream with mode=byob"
+ ],
+ "response-consume-stream.any.worker.html": [
+ "Read text response's body as readableStream with mode=byob",
+ "Read URLSearchParams response's body as readableStream with mode=byob",
+ "Read array buffer response's body as readableStream with mode=byob"
+ ],
  "response-init-contenttype.any.html": true,
  "response-init-contenttype.any.worker.html": true,
  "response-static-json.any.html": true,
@@ -5770,8 +5778,8 @@
  "Blob-slice-overflow.any.worker.html": true,
  "Blob-slice.any.html": true,
  "Blob-slice.any.worker.html": true,
- "Blob-stream.any.html": false,
- "Blob-stream.any.worker.html": false,
+ "Blob-stream.any.html": true,
+ "Blob-stream.any.worker.html": true,
  "Blob-text.any.html": true,
  "Blob-text.any.worker.html": true,
  "Blob-in-worker.worker.html": true,