service: fix for RestartMode=direct option

service: fix for RestartMode=direct option

With the fix done in PR28215, the unit restart job is created with type JOB_START.
Because of that, it is not properly merged anymore with the old one: the
merged job has state JOB_RUNNING. It should have state JOB_WAITING.

I think that the old job is not cleaned up because we don't go through the failed state.

With this fix, the merged job is properly created with state JOB_WAITING.