Using a MultiplayerSynchronizer while disconnecting an ENetMultiplayerPeer logs error "Unable to send packet on channel 1, max channels: 0"

[BatteryAcid]

Tested versions

Reproducible in v4.2.stable.official [46dc277]

System information

macOS Ventura 13.3.1 M1 Max

Issue description

When disconnecting a client peer from the server peer, while using a MultiplayerSynchronizer, it logs the following error:

This issue was referenced in another bug report here:
godotengine/godot-proposals#3459 (comment)

Steps to reproduce

1. Create a server and client ENetMultiplayerPeer
2. Create a MultiplayerSynchronizer with at least one synchronized property
3. Disconnect one of the peers (clients) on the server peer: server_peer.disconnect_peer(peer_id)
4. This error above is logged.

Minimal reproduction project (MRP)

unable-send-packet-recreate.zip