All Fabric mods fail to load with cryptic errors if there is an invalid/corrupted Forge mod

[Fuyukai]

Minecraft version

1.20.1

Describe the bug

All Fabric mods fail to load with cryptic errors if there is an invalid/corrupted Forge mod

Steps to reproduce

1. Add a mod with broken metadata (e.g. mkdir META-INF; echo "[invalid]" > META-INF/mods.toml; zip testmod.zip -r META-INF)
2. Add any Fabric mod to the instance
3. Observe inability to find fabric-api despite Forgified Fabric API being installed.

Logs

https://gist.github.com/Fuyukai/f9bd7c60f1a86374495e36ddad94697c

Additional context

Crash does not happen if testmod.jar is disabled, or the Fabric mods are disabled (Forge gives the appropriate warning about an invalid mod). The actual Fabric mod in this case doesn't matter; I picked the first I could find on Modrinth with no forge version or other dependencies; I've had it explode in an instance full of them.

For a less contrived example that actually happens in the wild, Oculus mc1.20.1-1.6.13a triggers this bug due to having invalid metadata.

[Lolothepro]

probably a Forge/NeoForge bug