test: do not use the same EventEmitter instance

Prevent multiple listeners for the `'error'` event to be added to the
same `EventEmitter` instance.

PR-URL: https://github.com/nodejs/node/pull/35560
Refs: https://github.com/nodejs/node/pull/35557#issuecomment-705476640


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>
Reviewed-By: Michael Dawson <midawson@redhat.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Robert Nagy <ronagy@icloud.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>