[1.21.1] Emissive textures not working

[ZsoltMolnarrr]

Continuity version: 3.0.0-1.21.1 for Fabric.
Block and item emissive textures (_e glow suffix) are simply not working.

Way to reproduce:

• Create new installation for 1.21.1
• Add graphics mods:
  • Sodium
  • Iris
  • Continuity
• Add content mods that glows
  • Wizards (RPG Series) - wizard staves should glow
  • Jewelry (RPG Series) - Gem Vein block should glow

Observe how nothing glows in-game.

Moreover none of the vanilla ores are glowing either.