List initializer inside object initializer breaks poorly

[shocklateboy92]

Here's a repro case:

var payload = new InlinePayloadConfiguration { Resources = new IBaseDocument[]
    {
        ProductDocumentMapper.MapProductDocument(pcd),
        ProductCoreDisplayMapper.MapProductCoreDisplaySubDocument(pcd),
        ResourceSetIds.MapResourceSetIdsSubDocument(pcd),
        ProductMetadataMapper.MapProductMetadataSubDocument(pcd),
        ProductSearch.MapProductSearchSubDocument(pcd),
        new LocalizationSubDocument
        {
            Schema = Schema.GetUriForModel(nameof(LocalizationSubDocument)),
            DocumentId = Guid.NewGuid(),
            ProductDocumentId = pcd.ProductId,
            // There is supposed to be one of these per market, with all the languages for that market
            Cultures = pcd.Core.Product.LocalizedProperties.Select(loc => loc.Language).ToArray()
        },
        TaxTypeMapper.MapTaxTypeSubDocument(pcd)
    }.Concat(ClientDisplaySkuLocalizedProperties.MapClientDisplaySkuLocalizedProperties(pcd)).Concat(AvailabilityMapper.MapAvailabilities(pcd)).Concat(TaxCode.MapTaxCodeSubDocuments(pcd)).Concat(SkuDeliveryDataOverlayMapper.MapSkuDeliveryDataOverlaySubDocument(pcd)).Concat(PaymentInstrumentMapper.MapPaymentInstrumentSubDocuments(pcd)).ToArray() };