src/vs/workbench/contrib/notebook/browser/notebookEditorWidget.ts/NotebookEditorWidget/_didEndDragMarkupCell
class NotebookEditorWidget:	private _didEndDragMarkupCell(cellId: string): void {
		const cell = this._getCellById(cellId);
		if (cell instanceof MarkupCellViewModel) {
			this._dndController?.endExplicitDrag(cell);
		}
	}