Resolver crashes when encountering a `$ref` at root level

[sdirix]

Describe the bug

When a JSON Schema specifies a $ref at the root level of the schema, our resolver often ends up in an endless recursion until a maximum stack error is thrown.

Example JSON Schema:

{
 "definitions": {
   "foo": {
     "type": "string"
   }
 },
 "$ref": "#/definitions/foo"
}

The issue is caused by this check.

Expected behavior

The resolver should not end up in an endless recursive "loop" when the actual schema is loop-free.

Steps to reproduce the issue

1. Use JSON Forms to render the schema above
2. Observe console logs

Screenshots

No response

Which Version of JSON Forms are you using?

3.6.0

Package

Core

Additional context

Related discussion: https://jsonforms.discourse.group/t/recursive-schema-error/2746