src/vs/workbench/contrib/notebook/browser/view/cellParts/cellDnd.ts/CellDragAndDropController/updateInsertIndicator
class CellDragAndDropController:	private updateInsertIndicator(dropDirection: string, insertionIndicatorAbsolutePos: number) {
		const { bottomToolbarGap } = this.notebookEditor.notebookOptions.computeBottomToolbarDimensions(this.notebookEditor.textModel?.viewType);
		const insertionIndicatorTop = insertionIndicatorAbsolutePos - this.list.scrollTop + bottomToolbarGap / 2;
		if (insertionIndicatorTop >= 0) {
			this.listInsertionIndicator.style.top = `${insertionIndicatorTop}px`;
			this.setInsertIndicatorVisibility(true);
		} else {
			this.setInsertIndicatorVisibility(false);
		}
	}