minecraft-assets/assets/minecraft/blockstates/sculk_shrieker.json

{
  "variants": {
    "can_summon=false": {
      "model": "minecraft:block/sculk_shrieker"
    },
    "can_summon=true": {
      "model": "minecraft:block/sculk_shrieker_can_summon"
    }
  }
}