http: change totalSocketCount only on socket creation/close

PR-URL: https://github.com/nodejs/node/pull/40572


Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Voltrex <mohammadkeyvanzade94@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Minwoo Jung <nodecorelab@gmail.com>
Reviewed-By: Ricky Zhou <0x19951125@gmail.com>