Show the vulnerability report even if 0 vulnerabilities or no traditional security scanners configured

What does this MR do and why?

Show vulnerability report table even when we have 0 vulns. Prior, we relied on security scanner pipeline to exist or vulnerabilties. Container Scanning for registry runs outside of a pipeline as a background task, and may be configured, but rarely generates vulns right away. We don't want to hide the vuln table, since the container registry tab indicates separately if that feature is enabled.

Show the vulnerability report even if 0 vulnerabilities

Changelog: changed

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

Before	After

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

Related to #421315 (closed)