Minecraft Version

1.21.1

KubeJS Version

kubejs-neoforge-2101.7.1-build.181

Rhino Version

rhino-2101.2.7-build.77

Architectury Version

13.0.8

Forge/Fabric Version

21.1.206

Describe your issue

The server_only option does not work as intended

With kubejs freshly installed on a brand new server, and 0 scripts installed (even default scripts)
clients are still prompted when joining that:
Channel of mod "KubeJS" failed to connect: this channel is missing on the client side, but required on the server!
Channel name kubejs:add_stage

It was my understanding that server_only is meant to allow purely server-sided modifications without any extra
requirements from the client as noted in discussions such as this

Crash report/logs

No response