Fix DynamicPageList on Wikinews (all languages) to show correct dates for pages, instead of an incorrect fixed date (like February 17, 2025) that appears for many older articles.

Use case(s):

1. On zh.wikinews, using the DynamicPageList plugin with parameters  category=中国 ,  count=30 , and  addfirstcategorydate=true  returns pages that were categorized long before February 17, 2025, but the plugin marks their first category date as February 17, 2025.

2. On en.wikinews, using  category=china ,  count=500 , and  addfirstcategorydate=true  exhibits the same issue: pages with historical categorization dates incorrectly display February 17, 2025 as their first category date.

No matter what you fill in category=, the result is the same.