Describe the bug

when schema contains anyOf objects with null type, other types are ignored on value completion.

{
  "anyOf": [
    {
      "properties": {
        "prop": {
          "const": "const value"
        }
      }
    },
    {
      "properties": {
        "prop": {
          "type": "null"
        }
      }
    }
  ]
}

yaml

prop: #cursor here

Expected Behavior

autocompletion should suggest null and const value

Current Behavior

autocompletion suggest only null

note that problem is probably in doc.getMatchingSchemas(schema.schema); where prop: is equivalent to prop: null so the only correct schema is the one with null type.