Fix: NavDropdown link navigation with stopPropagation

Prevent click-outside event handler from interfering with link navigation
by adding stopPropagation to both section and flat link click handlers.

Fixes issue where clicking a dropdown link from a product page would not navigate.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

.claude/settings.local.json

@@ -155,7 +155,11 @@
       "Bash(psql postgresql://postgres:craft2prints@192.168.0.190:5432/craft2prints -c ' *)",
       "Bash(node scripts/add-indexes.js)",
       "Bash(curl -s http://127.0.0.1:3000)",
-      "Bash(curl -s http://127.0.0.1:3000/products)"
+      "Bash(curl -s http://127.0.0.1:3000/products)",
+      "Bash(curl -s http://127.0.0.1:3000/products/awd-hoodie)",
+      "Bash(curl -s http://127.0.0.1:3000/made-to-order)",
+      "Bash(curl -s \"http://127.0.0.1:3000/products/awd-hoodie\")",
+      "Bash(git commit -m 'Fix: NavDropdown link navigation with stopPropagation *)"
     ]
   }
 }