Forge refmap is not included in mod jar file

[tmvkrpxl0]

This issue occurs when only Valkyrien Skies and addons are installed and no other mods

• I have tested this issue and it occurs when no other mods are installed

Minecraft Version

1.20​

Mod Loader

Forge

Issue description

During loading I see this warning:

[main/WARN] [mixin/]: Reference map 'cc_vs-forge-refmap.json' for cc_vs.mixins.json could not be read. If this is a development environment you can ignore this message

The mod jar indeed does not have file "cc_vs-forge-refmap.json". There is "cc_vs-common-refmap.json" though.
I don't know much about architectury mixin, but forge refmap being missing sounds sounds like forge mixin not being applied.

Issue reproduction

Observe loading during game startup

Logs

latest.log

debug.log is too large to upload but I'm sure it contains the issue.