Ellipse radii in pixels when using ellipse or hybrid clamping.
This struct value (FVector2D) belongs to FInteractionRuntimeWidgetProjectionSettings under InteractionRuntime|UI|Projection.
Designers configure this value in the owning asset or object details panel, while Blueprint logic can read the resolved value at runtime.
UPROPERTY(EditAnywhere, BlueprintReadOnly, Category = "InteractionRuntime|UI|Projection", meta = (ClampMin = "0.0"))
FVector2D EllipseRadiiPx = FVector2D(320.0f, 320.0f);