Disallow Sharded Mode of StorageS3 Queue Due to Rewrite

Why it matters

The sharded mode of the StorageS3 queue is being disallowed because it is planned to be rewritten. This change prevents users from relying on a feature that is unstable or under reworking, ensuring data consistency and avoiding potential issues with sharded usage of the S3 queue.

How to use it

Users should avoid enabling or using the sharded mode for the StorageS3 queue as it is no longer supported. Instead, use the non-sharded mode or wait for the new implementation after the rewrite is completed.