count of columns is missing

[iprokhorov]

hi, since a shopware update the sizes-attribute for the thumbnail is calculated forcedly. shopware/storefront@85b0e59
to do this, the columns value is used, this should theoretically be set in the individual columns, otherwise the value from the parent container is always inherited. e.g. here the 3 https://github.com/shopware/storefront/blob/trunk/Resources/views/storefront/section/cms-section-block-container.html.twig#L24. the sizes are then calculated for all columns as for 3 and then come too small, e.g. in a two-grid.