[FIX] website_sale: don't crash if website.filter.snippet has been deleted

Meanwhile another fix to make these filter more compliant in multi website.
For now, if you delete website 1 (and filter by cascade) and create website 2
and try to drop a caroussel product, it will crash because no filter exists.

closes odoo/odoo#62097

Signed-off-by: Jérémy Kersten (jke) <jke@openerp.com>

addons/website_sale/static/src/snippets/s_dynamic_snippet_products/options.js

@@ -28,8 +28,10 @@ const dynamicSnippetProductsOptions = s_dynamic_snippet_carousel_options.extend(
                 fields: ['id', 'res_id'],
             }
         }).then((data) => {
-            this.$target.get(0).dataset.filterId = data[0].res_id;
-            this.$target.get(0).dataset.numberOfRecords = this.dynamicFilters[data[0].res_id].limit;
+            if (data) {
+                this.$target.get(0).dataset.filterId = data[0].res_id;
+                this.$target.get(0).dataset.numberOfRecords = this.dynamicFilters[data[0].res_id].limit;
+            }
         });
     },