refactor(enhanced-kanban): remove unnecessary div wrapper in VirtualizedTaskList component

- Eliminated the redundant div element surrounding the EnhancedKanbanTaskCard to streamline the component structure and improve rendering efficiency.

worklenz-frontend/src/components/enhanced-kanban/VirtualizedTaskList.tsx

@@ -38,14 +38,12 @@ const VirtualizedTaskList: React.FC<VirtualizedTaskListProps> = ({
     onTaskRender?.(task, index);
 
     return (
-      <div className="virtualized-task-row" style={style}>
         <EnhancedKanbanTaskCard
           task={task}
           isActive={task.id === activeTaskId}
           isDropTarget={overId === task.id}
           sectionId={task.status || 'default'}
         />
-      </div>
     );
   }, [tasks, activeTaskId, overId, onTaskRender]);