Archived 12.0.0 line (former master tip) before main was repointed at the 10.11.z production code.

Upstream Jellyfin carries 12.0.0 itself, so this fork no longer maintains a copy.
What is NOT upstream, and is the reason this tag exists, are the fork's own guard
commits already adapted to net10.0:

  3d1ca8514a Restore recursion guard and guard a third ancestor walk
  891608bb53 Fix infinite loop in BaseItem.GetParents() on cyclic ParentId chains

When the fork's fixes are eventually brought forward to 12.0.0, start from here
rather than re-porting from the 10.11.z line.