[Frontend][Bugfix] Pass default_chat_template_kwargs to AnthropicServingMessages (#37899)

Signed-off-by: jetxa <jetxzhang@outlook.com>

vllm/entrypoints/anthropic/serving.py

@@ -72,6 +72,7 @@ class AnthropicServingMessages(OpenAIServingChat):
         tool_parser: str | None = None,
         enable_prompt_tokens_details: bool = False,
         enable_force_include_usage: bool = False,
+        default_chat_template_kwargs: dict[str, Any] | None = None,
     ):
         super().__init__(
             engine_client=engine_client,
@@ -87,6 +88,7 @@ class AnthropicServingMessages(OpenAIServingChat):
             tool_parser=tool_parser,
             enable_prompt_tokens_details=enable_prompt_tokens_details,
             enable_force_include_usage=enable_force_include_usage,
+            default_chat_template_kwargs=default_chat_template_kwargs,
         )
         self.stop_reason_map = {
             "stop": "end_turn",

vllm/entrypoints/openai/generate/api_router.py

@@ -150,6 +150,7 @@ async def init_generate_state(
             reasoning_parser=args.structured_outputs_config.reasoning_parser,
             enable_prompt_tokens_details=args.enable_prompt_tokens_details,
             enable_force_include_usage=args.enable_force_include_usage,
+            default_chat_template_kwargs=args.default_chat_template_kwargs,
         )
         if "generate" in supported_tasks
         else None