worker: switch to internal assert module

PR-URL: #26091
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

lib/internal/worker.js

@@ -1,7 +1,7 @@
 'use strict';
 
 const EventEmitter = require('events');
-const assert = require('assert');
+const assert = require('internal/assert');
 const path = require('path');
 const util = require('util');
 const {