Post job hook is not triggered when Runner is shutdown

Describe the bug

Seems that Runner skips the Complete Runner step when the SystemD service is stopped during job processing. This behaviour is different from when user cancels the workflow using GitHub UI.

To Reproduce
Steps to reproduce the behavior:

1. Define post job hook via ACTIONS_RUNNER_HOOK_JOB_COMPLETED
2. Start ephemeral runner as SystemD service
3. Schedule job for this runner
4. Stop the service using ./svc.sh uninstall while job is being processed by the runner
5. See that Complete Runner step was skipped in the Workflow Run

Expected behavior
The Complete Runner step is part of shutdown procedure same as Complete Job step.

Runner Version and Platform

Version of your runner?
v2.304.0

OS of the machine running the runner? Linux

What's not working?

Result when stopping the system service:

Result when User cancels via GitHub UI:

In both cases the step results with the same error:

Start with the runner shutdown path used when ./svc.sh uninstall stops the SystemD service, and compare it with the cancellation path that runs Complete Job. Reproduce the issue with ACTIONS_RUNNER_HOOK_JOB_COMPLETED on an ephemeral Linux runner. Done means the post-job hook runs during service shutdown as it does when the workflow is cancelled through the GitHub UI.