Make Mekanism Integration respect Chemical Attributes that require special handling

[pupnewfster]

The isAllowed method should really be validating if the chemical stack requires any special handling or not:

if (!ChemicalAttributeValidator.process(result, ChemicalAttributeValidator.DEFAULT))
    return false;

If you really want you could probably include a config option (defaulted to respecting the chemical attributes), but as it stands this mod currently is allowing for trivializing voiding nuclear waste (and any other chemicals that specifically mark that they require extra validation for if containers/systems can handle them) without having to deal with it.

If this is respected somewhere else and I overlooked it in my very brief glance feel free to just close this issue.