Fix job trace API calls when instance is dev

What does this MR do and why?

Fix job trace API calls when instance is dev

Fixes gitlab-com/gl-infra/delivery#19687 (closed).

Action items

• If adding environment variables for reactive processors, update config/triage-web.yaml and .gitlab/ci/triage-web.yml
• (If applicable) Add documentation to the handbook pages for Triage Operations =>
• (If applicable) Identify the affected groups and how to communicate to them:
  • /cc @person_or_group =>
  • Relevant Slack channels =>
  • Engineering week-in-review