Check for Shared database engine in can_exchange

[tavplubix]

Summary

Check for Shared database engine in can_exchange (for SharedCatalog). See https://clickhouse-inc.slack.com/archives/C03P2UB2NEB/p1748015555369729?thread_ts=1747039049.389849&cid=C03P2UB2NEB

Checklist

Delete items not relevant to your PR:

• Unit and integration tests covering the common scenarios were added
• A human-readable description of the changes was provided to include in CHANGELOG
• For significant changes, documentation in https://github.com/ClickHouse/clickhouse-docs was updated with further explanations or tutorials

[Copilot]

Pull Request Overview

Adds support for the Shared database engine in the can_exchange check to enable SharedCatalog exchanges.

• Expanded the allowed engine list in can_exchange to include "Shared".
• No other functional changes.

Comments suppressed due to low confidence (1)

dbt/adapters/clickhouse/impl.py:173

• Add unit and integration tests covering the new 'Shared' engine scenario to verify that can_exchange returns True when the engine is Shared.

return ch_db and ch_db.engine in ('Atomic', 'Replicated', 'Shared')

[tavplubix]

Thanks! Can we make a new release that includes this patch?

[BentsiLeviav]

@tavplubix sure, on it.