Fix PHP unit test isolation

services/nginx/app/objects/users_o.php

@@ -3,6 +3,7 @@
 namespace objects;
 
 use classes\db;
+use classes\customer_name_cache_payload_builder;
 use classes\object_property;
 use classes\redis;
 use classes\response;
@@ -505,20 +506,7 @@ class users_o extends db
      */
     private static function buildCustomerNameCachePayload(mixed $cached_name, ?string $fallback_name): ?array
     {
-        if (
-            is_object($cached_name)
-            && isset($cached_name->name)
-            && is_string($cached_name->name)
-            && trim($cached_name->name) !== ''
-        ) {
-            return ['name' => $cached_name->name];
-        }
-
-        if ($fallback_name !== null && trim($fallback_name) !== '') {
-            return ['name' => $fallback_name];
-        }
-
-        return null;
+        return customer_name_cache_payload_builder::build($cached_name, $fallback_name);
     }
 
     public function getCustomerEcocomicData(int $customer_number = null): users_o