Iceberg ALTER ADD COLUMN does not support Bool/Decimal

[alsugiliazova]

Problem

ClickHouse rejects adding a Bool column to an Iceberg table through DataLakeCatalog, although boolean is a valid Iceberg primitive type.

Same issue with Decimal.

Tested with https://altinity-build-artifacts.s3.amazonaws.com/PRs/1841/78d272e18d7641866ac4f4ded573708cf005a3f9/build_arm_release/clickhouse-common-static_26.3.13.20001.altinityantalya_arm64.deb

Reproduction

Create an Iceberg table through a DataLakeCatalog database, then run:

SET allow_insert_into_iceberg = 1;

ALTER TABLE datalake_db.`namespace.table`
ADD COLUMN boolean_col Nullable(Bool);

Actual behavior

Code: 36. DB::Exception: Unsupported type for iceberg Bool.
(BAD_ARGUMENTS)

Expected behavior

The alteration should succeed and add an optional Iceberg boolean field. Existing rows should contain NULL for the new column.

Maybe related to #2029