ci(pages): remove build_dir to prevent implicit Jekyll build; rely on uploaded artifact

Author: hj799web

.github/workflows/main.yml

@@ -38,8 +38,6 @@ jobs:
 
       - name: Configure Pages
         uses: actions/configure-pages@v5
-        with:
-          build_dir: ./
 
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3