Fix log_ingestor configuration fallback to defaults when set to null in Helm values.yaml

[coderabbitai]

Problem

When log_ingestor: null is set in values.yaml, the Pydantic model parser falls back to default values, which leaves the log-ingestor configured even though it should be disabled.

Impact

When clpConfig.package.storage is configured as "clp" (CLP-Text, which doesn't support the log-ingestor), the configuration is deemed invalid and most Helm chart deployments won't start.

Solution

The configuration parser should explicitly handle null values for log_ingestor to prevent fallback to default values, ensuring the feature remains disabled when set to null.

References

• PR: feat(helm): Add log-ingestor deployment. #1856
• Comment: feat(helm): Add log-ingestor deployment. #1856 (comment)
• Reported by: @junhaoliao

Files Affected

• tools/deployment/package-helm/values.yaml
• Configuration parser/validator (likely Python Pydantic models)