[PECO-AI] PECOBLR-1968: Add warnings in logs if someone uses a connection param that is not defined in python sql connector

[nikhilsuri-db]

PR Description: PECO Agent Workflow (Partner Ecosystem)

Jira Ticket: https://databricks.atlassian.net/browse/PECOBLR-1968

Changes

Added a KNOWN_KWARGS frozenset constant to client.py listing all recognized **kwargs keys consumed by Connection.__init__ and its downstream callees. Immediately after the logger.debug(...) call, the code computes the set difference between provided keys and KNOWN_KWARGS, then emits a logger.warning if any unknown keys are found. Three tests were added to ClientTestSuite to verify the warning behavior.

Test Cases Written

• test_unknown_connection_param_issues_warning — verifies that passing an unrecognized kwarg calls logger.warning
• test_unknown_connection_param_warning_names_the_param — verifies the warning message contains the unkno...

Summary: Added a KNOWN_KWARGS frozenset constant to client.py listing all recognized **kwargs keys consumed by Connection.__init__ and its downstream callees. Immediately after the logger.debug(...) call, the code computes the set difference between provided keys and KNOWN_KWARGS, then emits a logger.warning if any unknown keys are found. Three tests were added to ClientTestSuite to verify the warning behavior.

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