LibWeb: Implement Navigator.cookieEnabled

Author: https://github.com/linusg
Commit: c500ebdcd5
Pull-request: https://github.com/SerenityOS/serenity/pull/10309
Reviewed-by: https://github.com/IdanHo ✅

Userland/Libraries/LibWeb/Bindings/NavigatorObject.h

@@ -22,6 +22,7 @@ public:
 
 private:
     JS_DECLARE_NATIVE_FUNCTION(user_agent_getter);
+    JS_DECLARE_NATIVE_FUNCTION(cookie_enabled_getter);
 };
 
 }