perf(core): Optimize payload size for buffered jobs in DB

Previously, job data was getting duplicated inside the payload object.
This change cuts DB storage usage to half of the previous level.

packages/core/src/plugin/default-job-queue-plugin/sql-job-buffer-storage-strategy.ts

@@ -73,8 +73,17 @@ export class SqlJobBufferStorageStrategy implements JobBufferStorageStrategy {
 
     private toJobConfig(job: Job<any>): JobConfig<any> {
         return {
-            ...job,
+            queueName: job.queueName,
             data: job.data,
+            retries: job.retries,
+            attempts: job.attempts,
+            state: job.state,
+            progress: job.progress,
+            result: job.result,
+            error: job.error,
+            createdAt: job.createdAt,
+            startedAt: job.startedAt,
+            settledAt: job.settledAt,
             id: job.id ?? undefined,
         };
     }