Unknown message warnings

[maji-git]

Minor issue. When MPC communicates with editor's debugger. It seems to create warnings like this:

editor/debugger/script_editor_debugger.cpp:817 - unknown message mpc:connected

Not really critical, but worth checking out. In-case we need real-time communication with debugger in the future.

[maji-git]

Reference:
https://github.com/maji-git/multiplay-core/blob/main/addons/MultiplayCore/MultiPlay.gd#L468
https://github.com/maji-git/multiplay-core/blob/main/addons/MultiplayCore/editor/scripts/DebuggerPlugin.gd