True when PromptParts contains structured output.
This boolean flag (bool) belongs to FInteractionRuntimePromptPresentationResult under InteractionRuntime|Prompt.
Blueprint or editor workflows can write this value when constructing, overriding, or customizing the owning object.
UPROPERTY(BlueprintReadWrite, Category = "InteractionRuntime|Prompt")
bool bHasStructuredPrompt = false;