[BUG] Category ignore not working

[jhsoby]

Describe the bug
The ignore parameter for ignoring certain categories seems to be nonfunctional.

Steps to replicate the issue (include links if applicable):
Steps to reproduce the behavior:

1. Go to https://fi.wikipedia.org/wiki/Wikipedia:Viikon_kilpailu/Viikon_kilpailu_2026-04
2. It is set to ignore the categories Enontekiö, Kolari, Muonio, Pello, Tornio, Ylitornio, Lapin lääni, Lapin maakunta

What happens?:
Observe that the article Suur-Teuravuoma was counted, even though it is within the category tree if Kolari

What should have happened instead?
That article should not have been counted.

Additional context
Reported in https://fi.wikipedia.org/wiki/Keskustelu_k%C3%A4ytt%C3%A4j%C3%A4st%C3%A4:Jon_Harald_S%C3%B8by_(WMNO)#Ignore_not_working