Don't add S3 providers if GCP OAuth is used

[antonio2368]

Changelog category (leave one):

• Improvement

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

Don't add S3 providers if GCP OAuth is used.

Documentation entry for user-facing changes

• Documentation is written (mandatory for new features)

[clickhouse-gh]

Workflow [PR], commit [a0fe0bf]

Summary: ❌

job_name	test_name	status	info	comment
Integration tests (amd_asan, db disk, old analyzer, 3/6)		failure
	test_scheduler_cpu_preemptive/test.py::test_cpu_time_fairness[fixed_longer_dev]	FAIL	cidb
	test_restore_replica/test.py::test_fix_metadata_version_on_attach_part_after_restore	FAIL	cidb, issue
	test_merge_tree_s3_with_cache/test.py::test_read_after_cache_is_wiped[0-4-2]	FAIL	cidb
	test_merge_tree_s3_with_cache/test.py::test_read_after_cache_is_wiped[8192-2-1]	FAIL	cidb
Integration tests (amd_tsan, 1/6)		failure
	test_storage_nats/test_nats_jet_stream.py::test_nats_overloaded_insert	FAIL	cidb, issue
AST fuzzer (amd_tsan)		failure
	Logical error: '(isConst() || isSparse() || isReplicated()) ? getDataType() == rhs.getDataType() : typeid(*this) == typeid(rhs)'	FAIL	cidb, issue
BuzzHouse (amd_debug)		failure
	Logical error: 'Inconsistent AST formatting in Function_not: the query:	FAIL	cidb, issue
BuzzHouse (amd_ubsan)		failure
	UndefinedBehaviorSanitizer: undefined behavior (STID: 4443-3aa0)	FAIL	cidb