CloseListenSocket does not trigger SteamNetConnectionStatusChangedCallback_t disconnect on local client

[chrisnobrega]

Expected behavior:

bool CloseListenSocket( HSteamListenSocket hSocket ); All the connections that were accepted on the listen socket are closed ungracefully

https://partner.steamgames.com/doc/api/ISteamNetworkingSockets

Issue repro steps:

1. Start listen server
2. Connect to listen server with local client (same machine)
3. Close listen server
4. Local client connected to listen server does not get SteamNetConnectionStatusChangedCallback_t indicating a disconnect

I'm currently getting around this by manually closing each connection before closing the listen socket. But that feels hacky.