src/vs/workbench/contrib/notebook/browser/view/renderers/cellDnd.ts/CellDragAndDropController/onCellDrop
class CellDragAndDropController:	private onCellDrop(event: CellDragEvent): void {
		const draggedCell = this.currentDraggedCell!;

		if (this.isScrolling || this.currentDraggedCell === event.draggedOverCell) {
			return;
		}

		this.dragCleanup();

		const dropDirection = this.getDropInsertDirection(event.dragPosRatio);
		this._dropImpl(draggedCell, dropDirection, event.browserEvent, event.draggedOverCell);
	}