src/vs/workbench/contrib/notebook/browser/diff/diffElementViewModel.ts/SideBySideDiffElementViewModel/checkIfOutputsModified
class SideBySideDiffElementViewModel:	checkIfOutputsModified() {
		if (this.mainDocumentTextModel.transientOptions.transientOutputs) {
			return false;
		}

		const ret = outputsEqual(this.original?.outputs ?? [], this.modified?.outputs ?? []);

		if (ret === OutputComparison.Unchanged) {
			return false;
		}

		return {
			reason: ret === OutputComparison.Metadata ? 'Output metadata is changed' : undefined,
			kind: ret
		};
	}