[FIX] website_sale_comparison: allow inherit ProductComparison

closes odoo/odoo#69532

X-original-commit: 365f5e755d105542adaf1fd5a70a2966ae6a209b
Signed-off-by: Jérémy Kersten (jke) <jke@openerp.com>

addons/website_sale_comparison/static/src/js/website_sale_comparison.js

@@ -308,4 +308,5 @@ publicWidget.registry.ProductComparison = publicWidget.Widget.extend(cartHandler
         }
     },
 });
+return ProductComparison;
 });