Elapsed active progress time in seconds, e.g., show "1.2s" into a hold.
This numeric value (float) belongs to FInteractionUIPromptProgressPresentation 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")
float ElapsedSeconds = 0.0f;