Discriminator property case not transformed

[aabounegm]

I have an OpenAPI schema that makes use of type discriminator, but that property is preserved as is and is not transformed according to the properties option.

For example, let's say the schema looks like this:

openapi: "3.1.0"
info:
  title: Discriminator casing bug
  version: "1.0.0"
paths: {}
components:
  schemas:
    CatEvent:
      type: object
      properties:
        event_type:
          type: string
          const: "CAT"
        full_name:
          type: string
    DogEvent:
      type: object
      properties:
        event_type:
          type: string
          const: "DOG"
        breed:
          type: string
    AnimalEvent:
      oneOf:
        - $ref: "#/components/schemas/CatEvent"
        - $ref: "#/components/schemas/DogEvent"
      discriminator:
        propertyName: event_type

And my casing-config.yaml is simply:

properties: camelCase

In the output, event_type in the properties correctly gets transformed to eventType, but the discriminator property name is preserved as event_type, even though such property no longer exists on the schema.
The expected output is for discriminator.propertyName to also get converted to camelCase and become eventType