Mutated varg checks mutated deerclops setting for mutating

{ -- For search: deerclopscorpse
        creature = "deerclops",
        bank = "deerclops",
        sg = "SGdeerclops",
        firesymbol = "swap_fire",
        makeburnablefn = MakeLargeBurnableCorpse,
        faces = FACES.FOUR,
        sanityaura = -TUNING.SANITYAURA_LARGE,
        physicsradius = .5,
        shadowsize = {6, 3.5},
        scale = 1.65,
        tags = { "deerclops", "epiccorpse", "largecreaturecorpse" },

        has_rift_mutation = true,
        rift_mutant_data =
        {
            overridemutantprefab = "mutateddeerclops",
        },
    },

    { -- For search: wargcorpse
        creature = "warg",
        bank = "warg",
        sg = "SGwarg",
        firesymbol = "swap_fire",
        makeburnablefn = MakeLargeBurnableCorpse,
        faces = FACES.SIX,
        physicsradius = 1,
        shadowsize = {2.5, 1.5},
        tags = { "largecreaturecorpse" },

        has_rift_mutation = true,
        rift_mutant_data =
        {
            overridemutantprefab = "mutatedwarg",
            enabled_tuning = "SPAWN_MUTATED_DEERCLOPS",
        },
    }

From prefabs/corpse_defs.lua, notice lack of enabled_tuning for deerclops and enabled_tuning = "SPAWN_MUTATED_DEERCLOPS" for varg