dev-demo: add check for promo_picture before attaching files in carsResourseTemplate

AdminForth/1766/for-some-reason-upload-plugin-

Author: yaroslav8765

dev-demo/resources/cars_resources/carsResourseTemplate.ts

@@ -349,6 +349,9 @@ export default function carsResourseTemplate(resourceId: string, dataSource: Car
                 model: 'gpt-image-1', 
               }),
               attachFiles: async ({ record }) => {
+                if (!record.promo_picture) {
+                  return [];
+                }
                 return [`https://tmpbucket-adminforth.s3.eu-central-1.amazonaws.com/${record.promo_picture}`];
               },
               generationPrompt: "Generate a high-quality promotional image for a car with model {{model}} and color {{color}}. The car is a {{body_type}} type. The image should be vibrant and eye-catching, suitable for advertising purposes.",