Afia: fix context() calling undefined QrTypeCatalog::eventTypes()

Use paymentTypes() (this app's catalog) so the chat context loads instead of
500ing — the eventTypes() call was a QR Plus leftover.

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::paymentTypes();
         $codes = $account->qrCodes()->whereIn('type', $types);
 
         $ctx = [