response codes 4XX, 5XX, etc result in NaN

[jayvdb]

Describe the bug

https://swagger.io/docs/specification/v3_0/describing-responses/ describes 5XX as a valid definition of a response.

openapi-zod-client only accepts 'default' and specific response codes, and generates status: NaN for 5XX response code.

Minimal reproduction

• Change this line

  openapi-zod-client/examples/repro.yaml

  Line 32 in 192da9c

  default:

  from default:.. to "5XX": .. or 5XX: ..

The generated typescript includes

errors: [
{
    status: NaN,
    description: `unexpected error`,
    schema: ...
  },
]

Expected behavior

• An entry in the errors array with a status of "5XX" or similar