[csharp][generichost] Refactor duplicate apis

[devhl-labs]

Minor refactor only because this edge case is interfering in another change I want to make. I'm not sure why the api spec having tags results in duplicate apis, I'd like to see that removed. But until then we can just do this refactor.

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Summary by cubic

Refactored the C# GenericHost templates to always generate unique ApiResponse types when tags create duplicate APIs. Response interfaces/classes are now prefixed with the API classname and used consistently across method signatures, events, logging, and constructors.

• Refactors

  • In api.mustache, use vendorExtensions.x-duplicates with template lambdas to prefix ApiResponse interface/class names with the API classname, and propagate to return types (including OrDefault), event ExecuteOn* signatures, logger generics, and response construction.
  • Regenerated samples use unique names, e.g. IAPIKeysApiGetApiKeysIdApiResponse/APIKeysApiGetApiKeysIdApiResponse and IApiKeysApiGetApiKeysIdApiResponse/ApiKeysApiGetApiKeysIdApiResponse.

• Migration

  • If you reference generated response types directly, update to the new prefixed names (e.g., IGetApiKeysIdApiResponse → IAPIKeysApiGetApiKeysIdApiResponse).

^{Written for commit df29ada. Summary will update on new commits.}

[cubic-dev-ai]

All reported issues were addressed across 3 files

<sub>Reply with feedback, questions, or to request a fix.

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