Add trust_remote_code parameter and remove True

- Introduced a new model parameter `trust_remote_code`
- Set the default value of `trust_remote_code` to `False`
  to enhance security

examples/train_lora/qwen2vl_lora_dpo.yaml

@@ -1,5 +1,6 @@
 ### model
 model_name_or_path: Qwen/Qwen2-VL-7B-Instruct
+trust_remote_code: true
 
 ### method
 stage: dpo