Steps to reproduce:

• Download the first datapack, broken.zip, which contains a predicate with the following contents:

  {
    "condition": "minecraft:location_check",
    "predicate": {
      "block": {
        "blocks": [
          "minecraft:snow"
        ],
        "state": {
          "layers": 1
        }
      }
    }
  }
  

• Note the unquoted 1 in the layers block state.
• Install it into a world in 23w32a.
• Note that the log errors on this file, noting that it is not a json array.
• Download the second file, not_broken.zip, which contains the same file, with the 1 now quoted.
• Replace the previous datapack
• See the error has now disappeared
• This is also the case for predicates containing unquoted booleans.
• This error was not the case in previous versions, which supported unquoted booleans and numbers.