[chore] Fix stale issue workflow in cases where a component has no code owners (#16037)
[chore] Fix stale issue workflow in cases where a component has no code owners (#16037)

Grep will exit with an error status code when it doesn't find matches, so when looking for components and code owners we have to catch this case.
open-telemetry/opentelemetry-collector-contrib,open-telemetry/opentelemetry-collector-contrib