src/vs/workbench/contrib/notebook/browser/diff/notebookTextDiffList.ts/NotebookMouseController/onViewPointer
class NotebookMouseController:	protected override onViewPointer(e: IListMouseEvent<T>): void {
		if (isMonacoEditor(e.browserEvent.target as HTMLElement)) {
			const focus = typeof e.index === 'undefined' ? [] : [e.index];
			this.list.setFocus(focus, e.browserEvent);
		} else {
			super.onViewPointer(e);
		}
	}