Mute ydb/tests/olap/s3_import 3 tests in main

[ydbot]

Mute:
ydb/tests/olap/s3_import/py3test.sole chunk
ydb/tests/olap/s3_import/test_simple_table.py.TestSimpleTable.test_unavailable_during_import
ydb/tests/olap/s3_import/test_tpch_import.py.TestS3TpchImport.test_import_and_export

Branch:
main

Add line to muted_ya.txt:

ydb/tests/olap/s3_import py3test.sole chunk
ydb/tests/olap/s3_import test_simple_table.py.TestSimpleTable.test_unavailable_during_import
ydb/tests/olap/s3_import test_tpch_import.py.TestS3TpchImport.test_import_and_export

Owner: TEAM:@ydb-platform/cs

Read more in mute_rules.md

Summary history:
py3test.sole chunk: Muted Flaky last 3 days, at 2025-10-18:2025-10-21: success_rate 0.0%, p-0, f-0, m-10, s-0, total-10
test_simple_table.py.TestSimpleTable.test_unavailable_during_import: Muted Flaky last 5 days, at 2025-10-18:2025-10-21: success_rate 0.0%, p-0, f-0, m-10, s-0, total-10
test_tpch_import.py.TestS3TpchImport.test_import_and_export: Flaky(10-21)->Passed(10-18)->Flaky(10-19) last 3 days, at 2025-10-18:2025-10-21: success_rate 40.0%, p-4, f-6, m-0, s-0, total-10

Test run history: link

More info in dashboard

[ydbot]

Some tests have been unmuted:

• Test ydb/tests/olap/s3_import/test_tpch_import.py.TestS3TpchImport.test_import_and_export