[BUG] component that refs another component doesn't work

Created by: spacether

Bug Report Checklist

Have you provided a full/minimal spec to reproduce the issue?
Have you validated the input using an OpenAPI validator (example)?
Have you tested with the latest master to confirm the issue still exists?
Have you searched for related issues/PRs?
What's the actual output vs expected output?
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Description

component that refs another component doesn't work This came up when working on https://github.com/OpenAPITools/openapi-generator/pull/12619

Feature: jsonschema.$ref

openapi-generator version

6.0.0

OpenAPI declaration file content or url

openapi: 3.0.3
info:
  title: openapi 3.0.3 sample spec
  description: sample spec for testing openapi functionality, built from json schema
    tests for draft6
  version: 0.0.1
paths: {}
components:
  schemas:
    PropertyNamedRefThatIsNotAReference:
      properties:
        $ref:
          type: string
    ComponentRefsAnotherComponent:
      $ref: '#/components/schemas/PropertyNamedRefThatIsNotAReference'

Generation Details

Generate with python-experimental

Steps to reproduce

See above

Related issues/PRs

N/A

Suggest a fix

An import should be generated I think that this used to work