OAS 3.0: Rendering "additionalProperties: true" and "additionalProperties: {}" in Models

Version: 3.1.2

When additionalProperties contains a specific schema, e.g.

type: object
additionalProperties:
  type: integer

the Models section displays this:

but the following schemas

type: object
additionalProperties: true

type: object
additionalProperties: {}

does not indicate that the object may have additional properties:

Should it maybe display something like < * > : * or < * > : any value or similar?

Full spec:

openapi: 3.0.0
info:
  title: test
  version: 0.0.0
paths: {}
components:
  schemas:

    StrToIntDictionary:
      type: object
      additionalProperties:
        type: integer
        
    FreeFormObject:
      type: object
      additionalProperties: true

Start with the provided OpenAPI 3.0 full spec and inspect the Models rendering for schemas using additionalProperties: true and additionalProperties: {}. Compare it with the displayed integer-schema case; done means both free-form schemas visibly indicate that additional properties may contain any value, with the chosen wording or notation covered by the relevant rendering behavior.