DGS-20678 Fix possible NPE in CSFLE executor

[rayokota]

What

Checklist

• Contains customer facing changes? Including API/behavior changes
• Did you add sufficient unit test and/or integration test coverage for this PR?
  • If not, please explain why it is not required

References

JIRA:

Test & Review

Open questions / Follow-ups

[confluent-cla-assistant]

🎉 All Contributor License Agreements have been signed. Ready to merge.
_{Please push an empty commit if you would like to re-run the checks to verify CLA status for all contributors.}

[Copilot]

Pull Request Overview

This PR addresses a potential None reference issue in the CSFLE executor by ensuring that self.config is always set to a dictionary.

• Adds a branch to initialize self.config to an empty dictionary if rule_conf is not provided and self.config is None.
• Helps prevent runtime errors when accessing self.config.

[sonarqube-confluent]

Analysis Details

1 Issue

• 0 Bugs
• 0 Vulnerabilities
• 1 Code Smell

Coverage and Duplications

• 100.00% Coverage (60.90% Estimated after merge)
• No duplication information (1.00% Estimated after merge)

Project ID: confluent-kafka-python

View in SonarQube