[ES-1502544] Fix connection check for OSS JDBC

[samikshya-db]

Description

• Customer's valid use-case was being rejected by OSS JDBC's isValid check before connection was made. This was a regression for them when they switched from Legacy driver to OSS JDBC.

jdbcUrl =  "jdbc:databricks://test.cloud.databricks.com:443/;EnableArrow=0;ConnCatalog=test";

Testing

• Added unit tests
• Also tested manually

Additional Notes to the Reviewer