const properties are not supported with type field

[Woodz]

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  [X] bug report
  [ ] feature request
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• Summary

https://json-schema.org/understanding-json-schema/reference/generic.html#constant-values gives an example for how a const property can be defined

{
  "properties": {
    "country": {
      "const": "United States of America"
    }
  }
}

However, this fails due to The type undefined on property country is unknown

• Other information (e.g. detailed explanation, stacktraces, related issues, suggestions how to fix, links for us to have context, eg. StackOverflow, personal fork, etc.)