Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: kiyarose

.github/workflows/github-pages-preview.yml

@@ -33,6 +33,8 @@ jobs:
         run: npm clean-install --progress=false
 
       - name: Build
+        env:
+          BASE_PATH: /${{ github.event.repository.name }}/
         run: npm run build:pages
 
       - name: Upload Pages artifact