Correctly handle the "issue moved from one project to another" case

[marko-bekhta]

While testing the move of an issue from one project to another using https://hibernate.atlassian.net/browse/HBX-2955 it turns out that while an issue in the "new project" is correctly created and synced, the original issue still remains opened/unchanged in the downstream Jira.
Note: looking at the logs, I only saw the event for a new issue (HHH-19077) and nothing for the original one (HBX-2955). Will need to inspect the event payload and maybe other REST API calls to see if we can get the info somehow.