Schemas' content from `discriminator.mapping` are not displayed

Q&A (please complete the following information)

• OS: Windows 10
• Browser: Google Chrome
• Version: 123.0.6312.107
• Method of installation: -
• Swagger-UI version: 5.13.0
• Swagger/OpenAPI version: OpenAPI 3.1.0

Content & configuration

Example Swagger/OpenAPI definition:

openapi: 3.1.0
info:
  title: OpenAPI definition
  version: v0
servers:
- url: http://localhost:8080
  description: Generated server url
paths:
  /address-part:
    get:
      tags:
      - demo-controller
      operationId: addressPart
      responses:
        "200":
          description: OK
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/AddressPart'
components:
  schemas:
    AddressPart:
      description: address
      discriminator:
        propertyName: type
        mapping:
          BUILDING: '#/components/schemas/Building'
          STREET: '#/components/schemas/Street'
      oneOf:
      - $ref: '#/components/schemas/Building'
      - $ref: '#/components/schemas/Street'
    Building:
      description: Building
      properties:
        number:
          type: integer
          format: int32
        type:
          type: string
    Street:
      description: Street
      properties:
        name:
          type: string
        type:
          type: string

Swagger-UI configuration options:

SwaggerUI({
    "configUrl": "/v3/api-docs/swagger-config",
    "oauth2RedirectUrl": "http://localhost:8080/swagger-ui/oauth2-redirect.html",
    "url": "/v3/api-docs",
    "validatorUrl": ""
})

?yourQueryStringConfig

Describe the bug you're encountering

Schemas' content from discriminator.mapping are not displayed.

To reproduce...

Steps to reproduce the behavior:

1. Open the provided spec in the Swagger UI
2. Click on 'Schemas' -> 'AddressPart' -> 'Discriminator'

Expected behavior

Schemas' content for mappings are displayed. E.g. the same way as it's done for oneOf (see the below screenshot)

Current behavior

Schemas are shown just as regular text (not hyperlinks)

Reproduce the problem with the OpenAPI 3.1.0 example in the issue: open Schemas, then AddressPart, then Discriminator. Trace the Swagger UI schema-rendering entry point for discriminator.mapping and compare it with oneOf rendering. Done means mapped schemas are displayed as navigable schema content rather than plain text, with a regression test if the project provides a suitable location.