Move the helm registry QA spec to the proper location

🔍 What does this MR do and why?

• Moves the helm qa scenario into the proper directory.
• ⚠ No functional changes. This is purely a file move.

🎥 Screenshots or screen recordings

n / a

⛓ How to set up and validate locally

1. Follow https://about.gitlab.com/handbook/engineering/development/ops/package/quality/#how-to-run-them-locally
2. Run the maven scenario:

   WEBDRIVER_HEADLESS=false bundle exec bin/qa Test::Instance::All http://172.16.123.1:8000 -- qa/specs/features/browser_ui/5_package/package_registry/helm_registry_spec.rb --tag orchestrated --tag packages

🚨 MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.