Using "hideDefinitions" leads to Structural error in final spec

[luca-leanix]

Hi all,
we need to make use of the "hideDefintions" flag in order to get nested types being output correctly in our final spec file. The functionality itself works, however the "hideDefintions" flag appears in the final spec causing the issue to pop up when visualizing the swagger file (or when using cli-generators). Expectation would be that the flag does not appear in the final json file.

extendApi(
  z.object({
    hello: z.string(),
    world: z.union(z.array(CustomTypeA), z.array(CustomTypeB)),
  }),
  {
    hideDefinitions: ['world'],
    properties: {
      world: {
        anyOf: [
          {
            type: 'array',
            items: {
              $ref: '#/components/schemas/CustomTypeA'
            }
          },
          {
            type: 'array',
            items: {
              $ref: '#/components/schemas/CustomTypeB'
            }
          }
        ]
      }
    }
  }
);