[BUG][typescript] Using allOf, some types are misnamed

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?

Description

When using AllOf, certain requests get names that don't correspond to the context of their use, necessitating code that looks like this:

// PutRequest
return api.apiIRBsIrbControlIdUserUserNamePut({
    irbControlId,
    userName,
    // DeleteRequest???
    apiIRBsIrbControlIdGroupGroupNameDeleteRequest: { role },
  });

Aesthetically, the name of the field is strange and overly long (anything i can do there?) but more importantly, it is pulled from the wrong place. It should be apiIRBsIrbControlIdUserUserNamePutRequest not apiIRBsIrbControlIdGroupGroupNameDeleteRequest.

openapi-generator version

6.1.0 (corrected typo, was 6.0.1)

OpenAPI declaration file content or url

https://gist.github.com/MattiasMartens/23fcb15c23a10f9c624d20d71e6d8cbd

Reproduce TypeScript client generation with OpenAPI Generator 6.1.0 using the OpenAPI declaration in the linked gist, then compare the generated allOf request field names with the expected name in the report. Done means the request field uses the operation context shown in the issue rather than the unrelated delete-request name.