Should we be syncing private comments?

[grahamalama]

We previously decided that JBI should not sync private bugs. We're currently removing that ability in #580 (and there's also #246)

While we've turned off the ability to sync private bugs, we still have code that fetches private comments and syncs those with Jira.

jira-bugzilla-integration/jbi/services/bugzilla.py

Line 83 in b214e67

if bug.comment and bug.comment.is_private:

Is this something we want to do? We may instead want to comment on Jira something like "Private comment added to bug" and link to the private comment.