Improve rendering `oneOf: [string, string]`

Content & configuration

Swagger/OpenAPI definition:

swagger: "2.0"
host: localhost
basePath: /v1
tags:
- name: subnets

paths:
 /subnets:
   post:
     tags:
     - subnets
     summary: Create a subnet
     parameters:
     - in: body
       name: body
       required: true
       schema:
         $ref: '#/definitions/Subnet'

definitions:
 CIDRv4:
   type: string
   description: An IPv4 address range in CIDR notation.
   pattern: '^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(\/(3[0-2]|[1-2][0-9]|[0-9]))$'
   example: 10.9.8.0/24
 CIDRv6:
   type: string
   description: An IPv6 address range in CIDR notation.
   pattern: '^(?:(?:(?:[a-f0-9]{1,4}:){6}|(?=(?:[a-f0-9]{0,4}:){0,6}(?:[0-9]{1,3}\.){3}[0-9]{1,3}(?![:.\w]))(([0-9a-f]{1,4}:){0,5}|:)((:[0-9a-f]{1,4}){1,5}:|:)|::(?:[a-f0-9]{1,4}:){5})(?:(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)|(?:[a-f0-9]{1,4}:){7}[a-f0-9]{1,4}|(?=(?:[a-f0-9]{0,4}:){0,7}[a-f0-9]{0,4}(?![:.\w]))(([0-9a-f]{1,4}:){1,7}|:)((:[0-9a-f]{1,4}){1,7}|:)|(?:[a-f0-9]{1,4}:){7}:|:(:[a-f0-9]{1,4}){7})(?![:.\w])\/(?:12[0-8]|1[01][0-9]|[1-9]?[0-9])$'
   example: 2001:DB8:8700:2010::/64
 SubnetCIDR:
   type: string
   oneOf:
   - $ref: '#/definitions/CIDRv4'
   - $ref: '#/definitions/CIDRv6'
 Subnet:
   type: object
   required:
   - cidr
   properties:
     cidr:
       $ref: '#/definitions/SubnetCIDR'

Swagger-UI configuration options:

 window.ui = SwaggerUIBundle({
   url: "subnet.yaml",
   dom_id: '#swagger-ui',
   defaultModelRendering: 'model',
   deepLinking: true,
   presets: [
     SwaggerUIBundle.presets.apis,
     SwaggerUIStandalonePreset
   ],
   plugins: [
     SwaggerUIBundle.plugins.DownloadUrl
   ],
   layout: "StandaloneLayout"
 });

Is your feature request related to a problem?

Displays as follows:

Describe the solution you'd like

Display something more like this:

Describe alternatives you've considered

Additional context

Reproduce the issue with the supplied subnet.yaml definition and SwaggerUIBundle configuration. Trace the model rendering for SubnetCIDR's oneOf references and compare it with the requested compact display; done when the two string alternatives render in the shown form without losing their descriptions or patterns.