[New Model] GLM4.7-Flash (#17247)

Co-authored-by: zRzRzRzRzRzRzR <2448370773@qq.com>
Co-authored-by: JustinTong0323 <justinning0323@gmail.com>
Co-authored-by: Xinyuan Tong <xinyuantong.cs@gmail.com>
Co-authored-by: Baizhou Zhang <sobereddiezhang@gmail.com>

python/sglang/srt/entrypoints/openai/serving_chat.py

@@ -454,6 +454,7 @@ class OpenAIServingChat(OpenAIServingBase):
                         if request.chat_template_kwargs
                         else {}
                     ),
+                    return_dict=False,
                 )
             except Exception as e:
                 # If the first attempt fails, try transforming the tools format
@@ -476,6 +477,7 @@ class OpenAIServingChat(OpenAIServingBase):
                             if request.chat_template_kwargs
                             else {}
                         ),
+                        return_dict=False,
                     )
                 except jinja2.TemplateError as template_error:
                     # Template errors (e.g., from raise_exception in Jinja templates)