[Bug] Circularly references when using discriminator

[alSergey]

Describe the bug

When using discliminator, cyclic dependencies appear in types. The problem appeared in version 13.0.0, where support was added.

swagger-typescript-api@12.0.4

There was no discriminator support in this version, so the problem does not occur.

swagger-typescript-api@13.0.0

This version added support for discriminator, but it does not work correctly. This causes circular type references.

openapi-typescript@7.0.2

This library supports discriminator and there are no problems with cyclic type references.

Reproduction

Open StackBlitz:

• swagger-typescript-api@12.0.4 - generated/Api12.ts
• swagger-typescript-api@13.0.0 - generated/Api13.ts
• openapi-typescript@7.0.2 - generated/Api.ts

[MiracleUFO]

Facing same issue with 13.0.0