[Bug]: Enum wrongly generated in SDK models when used in allOf

[kpanot]

Package name

core

Package version

11.6.3

Reproduction steps

Open API Version: 3+

When generating a specification with an object containing an enum with an allOf, the definition of the Enum is not print in the generated Typescript file.

Example of specification:

{
  "openapi": "3.0.2",
  "info": {
    "title": "Swagger Petstore - OpenAPI 3.0",
    "license": {
      "name": "Apache 2.0",
      "url": "http://www.apache.org/licenses/LICENSE-2.0.html"
    },
    "version": "1.0.19"
  },
  "servers": [
    {
      "url": "/api/v3"
    }
  ],
  "tags": [
    {
      "name": "pet",
      "description": "Everything about your Pets",
    }
  ],
  "paths": {
    "/pet/{petId}": {
      "get": {
        "tags": [
          "pet"
        ],
        "summary": "Find pet by ID",
        "description": "Returns a single pet",
        "operationId": "getPetById",
        "parameters": [
          {
            "name": "petId",
            "in": "path",
            "description": "ID of pet to return",
            "required": true,
            "schema": {
              "type": "integer",
              "format": "int64"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "successful operation",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Pet"
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "PartialPet": {
        "type": "object",
        "properties": {
          "name": {
            "type": "string"
          }
        }
      },
      "Pet": {
        "type": "object",
        "allOf": [
          {
            "$ref": "#/components/schemas/PartialPet"
          },
          {
            "type": "object",
            "properties": {
              "numberOfLegs": {
                "type": "string",
                "enum": [
                  "four",
                  "two"
                ]
              }
            }
          }
        ]
      }
    }
  }
}

Current result

export interface Pet {
  name?: string;
  numberOfLegs?: numberOfLegsEnum; // <- type not found
}

Expected result

export interface Pet {
  name?: string;
  numberOfLegs?: numberOfLegsEnum;
}

export type numberOfLegsEnum = 'two' | 'four';

Additional comments

No response