events: allow the options argument to be null

Make `EventTarget.prototype.addEventListener()` accept `null` as a valid
value for the `options` argument.

PR-URL: https://github.com/nodejs/node/pull/39486


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Robert Nagy <ronagy@icloud.com>