FEditorGizmoTypePriorityis used to establish relative priority between conditional gizmo builders. It is up to the gizmo manager to determine how the priority is used. In the EditorInteractiveGizmoManager, if more than one gizmo builder returns true from SatsifiesCondition(), the gizmo builder with highest priority will be used. If there are multiple builders the highest priority, multiple gizmos will be built.