src/vs/workbench/contrib/notebook/browser/view/cellParts/cellStatusPart.ts/CellEditorStatusBar/updateActiveCell
class CellEditorStatusBar:	private updateActiveCell(): void {
		const isActiveCell = this.currentContext!.notebookEditor.getActiveCell() === this.currentContext?.cell;
		this.statusBarContainer.classList.toggle('is-active-cell', isActiveCell);
	}