Hangfire Temporal Activities incorrect cron time for hours

Hi,
Im trying to create time out that will trigger after `1 hour ` so i added a `Timer` activity with `durationFromSeconds(Number(getVariable("time_out"))) // time_out = 3600` i fount that the execution finishes imediatly within secounds like 2 to 5 secounds after execution.

when i tried to debug i found in the hangfire dashboard the cron expression for the job is `* * */1 * * *` thats generated from this [file](https://github.com/elsa-workflows/elsa-core/blob/master/src/activities/Elsa.Activities.Temporal.Hangfire/Extensions/DurationExtensions.cs) and i feel its wrong for multiple reasons:
1. AFAIK cron only accepts 5 section
- minutes
- hours
- day of month
- month
- day of week

there is no secounds as the class inserts
2. to make the cron work for each hour the minute section should be (`0` it will be at minute `0` from each hour ) not (`*` it will be every minute from each hour)

but if i tested with minutes like 30 minutes it works because the Hangfire cron library interprits the string from right to left excluding the excess
note: i didnt test with the Quartz Library
hope that every thing is clear

Start with src/activities/Elsa.Activities.Temporal.Hangfire/Extensions/DurationExtensions.cs and inspect how a 3600-second Timer duration becomes the dashboard cron expression. Reproduce the reported two-to-five-second completion, then verify that a one-hour duration produces a schedule that waits 3600 seconds without triggering every minute.

Written by the indexing model from the issue text.