Create: Rainbow Compound — RainbowCompound-forge-1.20.1-1.3.4b

— Updated the latest support version to 1.20.1
— Fix some data pack and assets pack bugs.
— Fix curios not rendering correctly.
— Fix the problem that curios rendering can’t be controlled on and off.
— Fix crash bug when creating worlds due to missing Caelus API.
— Fix the recipes data pack to fit the new smithing type in version 1.20.1.