[jdbc-v2] Fixed Tests

[chernser]

Summary

Checklist

Delete items not relevant to your PR:

• Closes issue
• Unit and integration tests covering the common scenarios were added
• A human-readable description of the changes was provided to include in CHANGELOG
• For significant changes, documentation in https://github.com/ClickHouse/clickhouse-docs was updated with further explanations or tutorials

[sonarqubecloud]

Quality Gate passed

Issues
9 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[mzitnik]

Just for general knowledge why we decrease the limit number?
What are we testing here where is no assert in the test body

[chernser]

Bigger number cause timeout on cloud.
But test is verifying that cancel doesn't stuck or throw exception.
we would need a better test for this.