Refactoring a schma with "$ref" results in false positive breaking change

The bug
When splitting a schema into two schemas where one refers with allOf to the other the diff shows breaking change, even if the end structure is the same.

To Reproduce

Example schema old.yaml:

openapi: "3.0.0"
info:
  title: Sample API
  description: API description in Markdown.
  version: 1.0.0
servers: []
paths:
  /test:
    get:
      summary: Your GET endpoint
      tags: []
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/working'
components:
  schemas:
    working:
      type: object
      properties:
        foo:
          type: string
        bar:
          type: integer

Example schema new.yaml:

openapi: 3.0.0
info:
  title: Sample API
  description: API description in Markdown.
  version: 1.1.0
servers: []
paths:
  /test:
    get:
      summary: Your GET endpoint
      tags: []
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/working'
      operationId: get-test
components:
  schemas:
    working:
      allOf:
        - type: object
          properties:
            foo:
              type: string
        - $ref: '#/components/schemas/bar'
    bar:
      type: object
      properties:
        bar:
          type: integer

Result of docker run -v $(pwd):/tmp openapitools/openapi-diff:latest /tmp/old.yaml /tmp/new.yaml:

==========================================================================
==                            API CHANGE LOG                            ==
==========================================================================
                                Sample API                                
--------------------------------------------------------------------------
--                            What's Changed                            --
--------------------------------------------------------------------------
- GET    /test
  Return Type:
    - Changed 200 OK
      Media types:
        - Changed application/json
          Schema: Broken compatibility
          Changed property type:  (object -> object)
--------------------------------------------------------------------------
--                                Result                                --
--------------------------------------------------------------------------
                 API changes broke backward compatibility                 
--------------------------------------------------------------------------

Expected behavior
The tool is expected to notice a change but not a breaking one since the allOf mapping results in the same schema after resolving.

Reproduce the report with the provided old.yaml and new.yaml using the documented docker run command, then trace the schema comparison and $ref/allOf resolution path. Done means the equivalent schemas still produce a change report without a breaking-compatibility result; add coverage for this example if the existing test layout provides a suitable location.