Migrating Custom events via JCMA is not supported, in Post function it will be mapped to Generic event

Summary

As per https://support.atlassian.com/migration/docs/what-gets-migrated-with-the-jira-cloud-migration-assistant/, migrating , Custom events are not migrated via JCMA. If those are enabled, after migrating via JCMA, it will be mapped to a generic event.

Steps to Reproduce

1. Create Custom event using https://support.atlassian.com/jira-cloud-administration/docs/add-a-custom-event/
2. Use that in Jira workflow post-function
3. Migrate Project to destination
4. Check the post-function

Expected results

• The event will be mapped to an original event created in the source instance

Actual Results

• The event will be mapped to "Fire an event that can be processed by listeners"