Ensure English screenshots are publish on GitHub pages.

.github/workflows/generate_github_pages.yml

@@ -28,6 +28,8 @@ jobs:
       - name: Run World screenshots generation script
         run: |
           ./tools/test/generateWorldScreenshots.py
+          mkdir -p screenshots/en
+          cp tests/uitests/src/test/snapshots/images/* screenshots/en
       - name: Deploy GitHub Pages
         uses: peaceiris/actions-gh-pages@v3
         with: