v.25.5Improvement

Add tests for schema evolution

In the storage DeltaLake delta-kernel implementation, fix for column mapping mode, add tests for schema evolution. #78921 (Kseniia Sumarokova).
Fixes the column mapping mode in the DeltaLake storage's delta-kernel implementation and adds tests for schema evolution.

Why it matters

This feature addresses issues with column mapping mode in DeltaLake storage, ensuring proper handling of schema changes over time. It improves the reliability and correctness of schema evolution support, providing users with consistent and accurate data management when schemas change.

How to use it

The fix is applied internally to the DeltaLake storage engine in ClickHouse. Users ensuring schema evolution compatibility with DeltaLake should update to this version where column mapping mode issues are resolved. No additional user action is required beyond updating ClickHouse.