fix: add health check to detect and recover stale EphemeralRunner registrations#4399

rob-howie-depop wants to merge 2 commits intoactions:masteractions/actions-runner-controller:masterfrom

rob-howie-depop:add-health-check-to-detect-and-recover-stale-EphemeralRunner-registrationsrob-howie-depop/actions-runner-controller:add-health-check-to-detect-and-recover-stale-EphemeralRunner-registrationsCopy head branch name to clipboard