[BUG][TypeScript] Bug Any Type is mapped to an object data type in TypeScript

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

As per Swagger documentation for Any Type

{} is shorthand syntax for an arbitrary-type schema

openapi-generator-cli maps shorthand for any type {} to object data type when language is set to typescript-angular

openapi-generator version

7.9.0
It is not a regression.

OpenAPI declaration file content or url

Swagger file:
https://github.com/tmforum-apis/TMF620_ProductCatalog/blob/master/TMF620-ProductCatalog-v4.0.0.swagger.json

Please see excerpt for CharacteristicValueSpecification.value

                "value": {
                    "$ref": "#/definitions/Any",
                    "description": "A discrete value that the characteristic can take on, or the actual value of the characteristic"
                }

        "Any": {},

Generation Details

Language: typescript-angular

Steps to reproduce

openapi-generator-cli generate -i https://raw.githubusercontent.com/tmforum-apis/TMF620_ProductCatalog/refs/heads/master/TMF620-ProductCatalog-v4.0.0.swagger.json -g typescript-angular -o ./openapi-generator-cli-TMF620_generated-typescript-models

$ grep "value?" ./openapi-generator-cli-TMF620_generated-typescript-models/model/characteristicValueSpecification.ts
    value?: object;

Related issues/PRs

Suggest a fix

Below type could be used instead of object

type AnyValue = string | number | boolean | any[] | { [key: string]: any };

Start by running the provided openapi-generator-cli command with the TMF620 specification and inspect the generated model/characteristicValueSpecification.ts file. Trace the typescript-angular generator's mapping for the empty Any schema, then verify that the generated value property uses the intended TypeScript representation rather than object.