[Bug] Updating scheduled email report fails if goal has been deleted

[pgampe]

Steps to reproduce (all in UI):

• Create a goal
• Create a scheduled report using this goal
• Create a new goal
• Delete the old goal
• Open scheduled report
• Select new goal
• Try to save scheduled report

Overserved:

Saving fails with an exception.

Expected

Successful save

This fails due to:

https://github.com/matomo-org/matomo/blob/d0b89d2cf0e58648aa72f4e4214328c10e959fd6/plugins/ScheduledReports/API.php#L826

Suggested solution:

Instead of throwing an exception, unset the respective report from the array.

I tried this locally and it works fine.