fix(core): Referencing combined enums results in a duplicate schema name error

[lnkarma]

Status

READY

Description

Fix #1419

Fixes Referencing combined enums results in a duplicate schema name error #1419

Todos

• Tests
• Documentation
• Changelog Entry (unreleased)

Steps to Test or Reproduce

Outline the steps to test or reproduce the PR here.

> cd tests
> yarn generate:default

You should see

🎉 combined-enum - Your OpenAPI spec has been converted into ready to use orval!

Should generate the following file at tests/generated/default/combine-enum/schemas/colors.ts

import { Colors1 } from './colors1';
import { Colors2 } from './colors2';

export type Colors = typeof Colors[keyof typeof Colors] 

// eslint-disable-next-line @typescript-eslint/no-redeclare
export const Colors = {...Colors1,...Colors2,} as const;