src/vs/workbench/contrib/notebook/browser/view/renderers/backLayerWebView.ts/BackLayerWebView/focusOutput
class BackLayerWebView:	focusOutput(cellId: string, viewFocused: boolean) {
		if (this._disposed) {
			return;
		}

		if (!viewFocused) {
			this.webview?.focus();
		}

		this._sendMessageToWebview({
			type: 'focus-output',
			cellId,
		});
	}