test: fix test-http-connect

Fixes: nodejs#18940
PR-URL: nodejs#18941
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

Author: BridgeAR

test/parallel/test-http-connect.js

@@ -34,7 +34,7 @@ server.on('connect', common.mustCall((req, socket, firstBodyChunk) => {
   assert.strictEqual(socket.listeners('close').length, 0);
   assert.strictEqual(socket.listeners('drain').length, 0);
   assert.strictEqual(socket.listeners('data').length, 0);
-  assert.strictEqual(socket.listeners('end').length, 1);
+  assert.strictEqual(socket.listeners('end').length, 2);
   assert.strictEqual(socket.listeners('error').length, 0);
 
   socket.write('HTTP/1.1 200 Connection established\r\n\r\n');