fix(server): missing asset files relation (#12295)

server/src/services/media.service.ts

@@ -176,7 +176,7 @@ export class MediaService {
   async handleGeneratePreview({ id }: IEntityJob): Promise<JobStatus> {
     const [{ image }, [asset]] = await Promise.all([
       this.configCore.getConfig({ withCache: true }),
-      this.assetRepository.getByIds([id], { exifInfo: true }),
+      this.assetRepository.getByIds([id], { exifInfo: true, files: true }),
     ]);
     if (!asset) {
       return JobStatus.FAILED;