Delete syncs when deleting a connection, provider

[khaliqgant]

Saw in temporal there are a lot less sync schedules than what is in the database and realized that logic was in the code to delete the schedule in temporal on connection delete or config delete but was not there to delete the sync in the database. This was because before soft deletes objects cascaded. We need to explicitly handle deleting all objects on connection delete and config delete.

This should fix that logic and also delete stale syncs, schedules, jobs, and data records.

• Clean up stale syncs
• Fix logic