True when the filtered surface has more than one displayable page or paging controls are visible.
This boolean flag (bool) belongs to FInteractionUISurfaceProjection under InteractionUI.
Disabled-only pages and pages hidden by requirement UI policy are removed before this flag is resolved. If filtering leaves one page, widgets should not show paging UI.
UPROPERTY(BlueprintReadOnly, Category = "InteractionUI")
bool bHasPaging = false;