$any/$all should be arrays

[jazcarate]

As a JSON object "merges" by keys, an experiment where a value needs to be one of two things, it can not be written.

{
    "EXP001": {
        "foo": {
            "$any": {
                "$eq": 1,
                "$eq": 2
            }
        }
    }
}

$equal: 1 gets lost.

After the change, this should also be reasonable to expect:

{
    "EXP001": {
        "foo": {
            "$any": [1, 2]
        }
    }
}