worker: make MessagePort inherit from EventTarget

Use `NodeEventTarget` to provide a mixed `EventEmitter`/`EventTarget`
API interface.

PR-URL: https://github.com/nodejs/node/pull/34057
Refs: https://twitter.com/addaleax/status/1276289101671608320


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>