Update image URL logic in ImageUploader component

Replace direct `fileUrl` usage with `getServerFileUrl` utility for consistent server URL formatting. Remove unnecessary fallback logic to streamline image selection.

frontend/src/hooks/usePresignedUpload.ts

@@ -52,7 +52,6 @@ export function usePresignedUpload(options: UsePresignedUploadOptions = {}) {
       if (!data || !data.upload_url || !data.file_url) {
         throw new Error("Invalid response obtaining presigned URLs");
       }
-      console.log("Presigned URL response: ", data);
       return data;
     },
   });