2021-03-25-fix-product-preview-of-cross-selling.md

title	issue
Fix cross selling preview does not show any products	NEXT-14292

Administration

• Changed openModalPreview method in sw-product-cross-selling-form component to make sure modal will be opened after finishing to get product stream filters.
• Changed loadStreamPreview method in sw-product-cross-selling-form component to get product stream filters if needed.
• Changed sw_product_detail_cross_selling_modal_preview_modal block in sw-product-cross-selling-form component template.
• Added sw_product_cross_selling_form_condition_tree_invisibly block in sw-product-cross-selling-form component template.