Fix [#24039(GitHub)](https://github.com/go-gitea/gitea/issues/24039)
At present, if a job fails in the `Set up job`, the result status of the job will still be `success`. The reason is that the `pre` steps don't call `SetJobError`, so the `jobError` will be nil when `post` steps setting the job result. See 5c4a96bcb7/pkg/runner/job_executor.go (L99)
Reviewed-on: https://gitea.com/gitea/act/pulls/40
Reviewed-by: Jason Song <i@wolfogre.com>
Co-authored-by: Zettat123 <zettat123@gmail.com>
Co-committed-by: Zettat123 <zettat123@gmail.com>
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