Try to add parent work item for orphan tasks/bugs

[jernejk]

Sometimes, when we work on a task/pbi, we are not assigned to the parent work item.

This means that the hierarchy isn't correct as a child needs to be displayed on the top level.

Acceptance criteria

When a task/bug is found that has a parent and parent is available on the list (probably because the user is not associated), try to find it directly via the APIs.

[jernejk]

Removed from the milestone as "Team" report fixes this issue. For the "Me" report, I'll tackle this later.