fix(log): 修复自动创建 URS 用户映射时的日志信息错误

- 将日志中的 'username' 字段从 $userDto->name 改为 $userDto->username
- 确保日志信息正确地记录了用户的用户名而不是名称

app/Module/UrsPromotion/Services/UrsUserMappingService.php

@@ -161,7 +161,7 @@ class UrsUserMappingService
             Log::info('自动创建URS用户映射成功', [
                 'urs_user_id' => $ursUserId,
                 'farm_user_id' => $userDto->id,
-                'username' => $userDto->name,
+                'username' => $userDto->username,
                 'mapping_id' => $mapping->id
             ]);