CI fixes

[PedroTadim]

Changelog category (leave one):

• CI Fix or Improvement (changelog entry is not required)

Changelog entry (a user-readable short description of the changes that goes into CHANGELOG.md):

...

Documentation entry for user-facing changes

• When generating inserts, the table may not have any insertable columns. Remove the wrong assertion.

• A column may be modified more than once in a single ALTER statement. Add defensive lines.

• A few probability tweaks.

• Miss formats in URL calls sometimes, and see what happens.

• Add generateSerialID column to non-deterministic tables only.

• Documentation is written (mandatory for new features)

[clickhouse-gh]

Workflow [PR], commit [823b064]

Summary: ❌

job_name	test_name	status	info	comment
Integration tests (amd_asan, db disk, old analyzer, 1/6)		failure
	test_projection_rebuild_with_required_columns/test.py::test_projection_rebuild_uses_only_required_columns	FAIL	cidb, issue	ISSUE EXISTS
Integration tests (amd_asan, db disk, old analyzer, 4/6)		failure
	test_kafka_bad_messages/test_mv_target_missing.py::test_missing_mv_transitive_target[generate_old_create_table_query]	FAIL	cidb, issue	ISSUE EXISTS
Integration tests (arm_binary, distributed plan, 1/4)		failure
	test_backup_restore_on_cluster/test_disallow_concurrency.py::test_concurrent_restores_on_same_node	FAIL	cidb, issue	ISSUE CREATED
BuzzHouse (amd_debug)		failure
	Logical error: 'Inconsistent AST formatting: the query: (STID: 1941-1bfa)	FAIL	cidb, issue	ISSUE EXISTS