icebergCluster fails with NAMED_COLLECTION_DOESNT_EXIST while icebergS3Cluster works with the same parameters

[alsugiliazova]

Describe the bug
When querying Iceberg data, icebergS3Cluster works correctly, but the equivalent query using icebergCluster fails with a NAMED_COLLECTION_DOESNT_EXIST error.

SELECT *
FROM icebergS3Cluster(replicated_cluster, iceberg_conf, filename = 'data')

Query id: 5a7bc59b-28d5-4f19-8639-7567f82cb977

   ┌─name────┬─double─┬─integer─┐
1. │ Alice   │ 195.23 │      20 │
2. │ Bob     │ 123.45 │      30 │
3. │ Charlie │  67.89 │      40 │
   └─────────┴────────┴─────────┘

3 rows in set. Elapsed: 0.128 sec. 

clickhouse1 :) select * from icebergCluster(replicated_cluster, iceberg_conf, filename='data')

SELECT *
FROM icebergCluster(replicated_cluster, iceberg_conf, filename = 'data')

Query id: b9ec2220-d951-423f-8ab2-902f38bf4d52


Elapsed: 0.010 sec. 

Received exception from server (version 25.8.12):
Code: 669. DB::Exception: Received from localhost:9000. DB::Exception: There is no named collection `replicated_cluster`. (NAMED_COLLECTION_DOESNT_EXIST)