[fix] fixed an issue where cron jobs were not rescheduled

[Duansg]

What's changed?

close #4157

Fixed an issue where monitoring tasks scheduled by cron would revert to fixed-interval scheduling. Due to parameter copying issues in the build paths of some tasks, the TimerDispatcher never entered the cron branch—cron would only function properly after editing the monitor. This issue also occurred during creation, restart, and when the collector reconnected.

Modification details

Copy scheduleType / cronExpression in every path that builds a cyclic job:

• restart: SchedulerInit.run() .
• create: MonitorServiceImpl.addMonitor().
• template update:MonitorServiceImpl.updateAppCollectJob().
• collector online: CollectorJobScheduler.collectorGoOnline().
• One-time detection paths (cyclic = false) are left unchanged.
• The correct execution of the cron job following the above modification path has been verified.

Checklist

• I have read the Contributing Guide
• I have written the necessary doc or comment.
• I have added the necessary unit tests and all cases have passed.

Add or update API

• I have added the necessary e2e tests and all cases have passed.