I'm inclined to just say "don't do that". Considering that the Wumpus Cave is very much an aftercore thing, I can't think of any reason why you wouldn't simply remove the blindness before adventuring there. (That also applies to essentially every other Bug Report we've had that says something like "I drank some white lightning and was blind, and when I adventured, KoLmafia didn't track some things the way it would have had I not been blind." For blindness afflicted on you during combat, I have more sympathy, but intentionally adventuring while blind? Sucks to be you.)
However, to address this particular issue, I suppose we could realize that the ONLY monster you will find in the Wumpus Cave, blind or not, is the wumpus. I.e., AdventureRequest.translateGenericType could always return "wumpus" if you were redirected to a fight from choice #360. Somehow.