Resolve "`gitlab-runner start` throws "FATAL: Failed to start gitlab-runner: exit status 134" when started prior to being logged in"
requested to merge 37953-gitlab-runner-start-throws-fatal-failed-to-start-gitlab-runner-exit-status-134-when-started into main
What does this MR do?
Documents the need for a UI login when receiving exit status 134 errors.
Why was this MR needed?
It might have a similar root cause as the Input/output error issue, but is distinct enough to cause confusion
What's the best way to test this MR?
The steps to reproduce are outlined in `gitlab-runner start` throws "FATAL: Failed to ... (#37953 - closed)
What are the relevant issue numbers?
Closes #37953 (closed)