[MC-137792] Passive mobs drop cooked meat (caused by outdated/invalid data pack)

Moderator Note

This is caused by an outdated loot table with a faulty condition for the furnace smelting. Please contact the data pack creator and ask them to update their pack.
1.13:

"condition": "entity_properties",
"entity": "this",
"properties": {
    "on_fire": true
}

1.14:

"condition": "minecraft:entity_properties",
"entity": "this",
"predicate": {
  "flags": {
    "is_on_fire": true
  }
}

Passive mobs, and fish, are dropping the cooked variant of the food they drop