Tested versions

Reproducible in each version from 4.4 -> 4.6.1

System information

Windows 11, Arch linux

Issue description

Each reconnection create an objects for client and server (somewhere internally) and don't free them after closing.

Steps to reproduce

Open in any godot version (this demo works as well https://godotengine.org/asset-library/asset/2799))
Start "compo.tscn", press listen on server side and toggle "spam" button, this will send reconnection requests repetitively.
And you will see object count raise in monitors.
Even if server not enabled this will raise objects amount too but for client only.

Archive.zip

Minimal reproduction project (MRP)

I work on web project and notice that objects count on server raise non-stop if i spam with client reconnection. So this is super bad for long live server that works for our game.