title	issue
Display "Cross Selling" block on Storefront	NEXT-12064

Storefront

Added src/Storefront/Resources/views/storefront/block/cms-block-cross-selling.html.twig to display cross-selling cms block.
Changed method collect() in Shopware\Core\Content\Product\Cms\CrossSellingCmsElementResolver to handle get product data when used in PDP layout.