Final single-line prompt assembled from input, command, state, and progress text.
This localized text (FText) belongs to FInteractionUIPromptTextPresentation under InteractionUI.
Runtime and UI code should treat this as resolved state from the owning object. Read it to present, branch, or debug behavior without re-authoring the underlying interaction data.
UPROPERTY(BlueprintReadOnly, Category = "InteractionUI")
FText PreparedLineText;