src/vs/workbench/contrib/notebook/browser/view/renderers/cellRenderer.ts/MarkupCellRenderer/getMarkdownDragImage
class MarkupCellRenderer:	private getMarkdownDragImage(templateData: MarkdownCellRenderTemplate): HTMLElement {
		const dragImageContainer = DOM.$('.cell-drag-image.monaco-list-row.focused.markdown-cell-row');
		DOM.reset(dragImageContainer, templateData.container.cloneNode(true));

		// Remove all rendered content nodes after the
		const markdownContent = dragImageContainer.querySelector('.cell.markdown');
		const contentNodes = markdownContent?.children[0].children;
		if (contentNodes) {
			for (let i = contentNodes.length - 1; i >= 1; i--) {
				contentNodes.item(i)!.remove();
			}
		}

		return dragImageContainer;
	}