"Cancel Test Run" button in "Test Results" window does not work as expected.

[WilcoKruijer]

Describe the bug

The "Cancel Test Run" button is unable to actually stop tests when they are running.

To Reproduce

1. Have a test that runs for a while (see code example below).
2. Run the test using the gutter play button.
3. Go to the "Test Results" window.
4. Press the "Cancel Test Run" button.
5. Observe that nothing happens.

Expected behavior

The test is stopped / killed.

Screenshots

(Note the square stop button on the right)

Versions

vscode: v1.95.0 deno: v2.0.4 extension: v3.42.0

Example code

import { delay } from "@std/async";

async function* poll(
  signal: AbortSignal,
  intervalMs: number = 100,
): AsyncGenerator<number, void, void> {
  let itt = 0;
  while (!signal.aborted) {
    yield ++itt;

    await delay(intervalMs);
  }
}

Deno.test("test", async () => {
  const controller = new AbortController();
  const signal = controller.signal;

  const generator = poll(signal, 1000);

  for await (const n of generator) {
    console.log(n);

    if (n > 10) {
      controller.abort();
    }
  }
});