fix(lang): Always include the "Results" section in the output JSON even if no vulnerabilities are detected

[IntegralProgrammer]

Description

When performing a vulnerability scan for language package vulnerabilities with JSON output (eg. trivy fs ~/project --format json). The "Results" section should always be present, even if no vulnerabilities were found.

Related issues

• The "Results" section is not included in output JSON for langpkg scans if no vulnerabilities are found #6080

Checklist

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[github-actions]

This PR is stale because it has been labeled with inactivity.