Do not import ApiClient when supportUrlQuery is false

[sjw2547]

Fixes #23700

When generating only models and JSON related supporting file with the supportUrlQuery as false, invalid unused import for ApiClient is included for generated Java classes that are defined as OneOf or AnyOf in the OpenAPI specification. PR does not include the ApiClient import in these classes if supportUrlQuery is false.

@bbdouglas @sreeshas @jfiala @lukoyanov @cbornet @jeff9finger @karismann @Zomzog @lwlee2608 @martin-mfg

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---

Summary by cubic

Skip importing ApiClient in generated Java oneOf/anyOf model classes when supportUrlQuery is false to remove unused import errors; regenerate Java native sample models and remove a stray debug comment. Fixes #23700.

• Bug Fixes
  • Guard the ApiClient import in anyof_model.mustache and oneof_model.mustache behind {{#supportUrlQuery}} so model-only/JSON-only generation doesn’t include it.
  • Remove an unnecessary debug comment from the generated output.

^{Written for commit 77c3431. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 2 files