Move API fuzzing download button in Pipeline page - Part 2- Use Query fragment in security_reports_summary.vue

Parent Issue: #333660 (closed)

• Update query in security_reports_summary.vue component to use query fragment

Update this Query: https://gitlab.com/gitlab-org/gitlab/-/blob/v14.0.0-ee/ee/app/assets/javascripts/security_dashboard/components/pipeline/pipeline_security_dashboard.vue#L39

with query fragment

• Define security-report-download-dropdown component in v-for of security_reports_summary.vue that renders each scanner type results
• Implement a computed prop or parsing function to parse the job -> nodes array into an object containing separate arrays of each report type.
• Add unit tests