Scheduled HangFire Jobs duplicate on server restart #121
Description
If you use an activity like StartAt, then Elsa will schedule the ResumeWorkflowJob.ExecuteAsync job in Hangfire to run at the specified start at timestamp.
Hangfire stores those persistently in the Hangfire.Jobs table, so they survive a server reboot.
Everytime the Elsa server application rebootst though, Elsa will schedule another ResumeWorkflowJob.ExecuteAsync for all workflow instances currently suspended on such an activity, regardless if a job is already scheduled.
This very rapidly creates thousands of duplicate scheduled jobs in the hangfire dashboard.
Seen in Elsa 3.6-rc2