batch-repl: Replicate missing metadata and standard headers (#18484)

- Replicate Expires when the source is local or remote
- Replicate metadata when the source is remote

cmd/batch-handlers.go

@@ -520,6 +520,10 @@ func toObjectInfo(bucket, object string, objInfo miniogo.ObjectInfo) ObjectInfo
 		oi.UserDefined[xhttp.AmzStorageClass] = objInfo.StorageClass
 	}
 
+	for k, v := range objInfo.UserMetadata {
+		oi.UserDefined[k] = v
+	}
+
 	return oi
 }