[1.18.2] Evaporation Generator accepts other fluids

[HalcyonSeas73]

Minecraft Version: 1.18.2 Forge Version: 40.1.16 Mod Version: 1.7.0 Single Player or Server: Single Describe problem (what you were doing; what happened; what should have happened):

Evaporation generator, which should only accept lava, can accept other fluids as well- which, of course, do nothing.