Allows for using `AbortSignal` across worker threads and contexts.
```js
const ac = new AbortController();
const mc = new MessageChannel();
mc.port1.onmessage = ({ data }) => {
data.addEventListener('abort', () => {
console.log('aborted!');
});
};
mc.port2.postMessage(ac.signal, [ac.signal]);
```
Signed-off-by: James M Snell <jasnell@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/41050
Refs: https://github.com/whatwg/dom/issues/948
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Robert Nagy <ronagy@icloud.com>
