url: fix performance regression

PR-URL: #39778
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>

lib/internal/url.js

@@ -617,7 +617,7 @@ function onParseHashComplete(flags, protocol, username, password,
 }
 
 function isURLThis(self) {
-  return self?.[context] !== undefined;
+  return (self !== undefined && self !== null && self[context] !== undefined);
 }
 
 class URL {