lib: replace Symbol global by the primordials Symbol

PR-URL: https://github.com/nodejs/node/pull/30737
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

lib/_http_agent.js

@@ -25,6 +25,7 @@ const {
   ObjectKeys,
   ObjectSetPrototypeOf,
   ObjectValues,
+  Symbol,
 } = primordials;
 
 const net = require('net');