Afia: fix dangling QrTypeCatalog::eventTypes() in chat context

AfiaController::context() called QrTypeCatalog::eventTypes(), which does
not exist on this app's catalog (leftover from the Events-app template) —
every Afia chat 500'd with 'Afia could not respond right now' before the
LLM was ever reached. Use storefrontTypes() (shop/menu/booking), the QR
types this merchant app actually owns.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/Http/Controllers/Qr/AfiaController.php

@@ -45,7 +45,7 @@ class AfiaController extends Controller
             return ['signed_in' => 'no'];
         }
 
-        $types = QrTypeCatalog::eventTypes();
+        $types = QrTypeCatalog::storefrontTypes();
         $codes = $account->qrCodes()->whereIn('type', $types);
 
         $ctx = [