* fix(sharding): Improve the 0004 sharding migration
This change:
- Makes the rollbacks always work by
- Fixing some operations from before
- Creating/deleting materialized views correctly
- Ensuring zookeeper paths are unique
- Handles an edge case around moving tables by retrying
* Rename a parameter
* Verify migration status
* Update a test
* >=
* Update ee/clickhouse/errors.py
Co-authored-by: Tiina Turban <tiina303@gmail.com>
* Update code comment
* Update log message
* Type:ignore
Co-authored-by: Tiina Turban <tiina303@gmail.com>