[Renderer] Move InputPreprocessor into Renderer (1/2) (#34510)

Signed-off-by: DarkLight1337 <tlleungac@connect.ust.hk>
Signed-off-by: Cyrus Leung <cyrus.tl.leung@gmail.com>

tests/entrypoints/openai/test_completion_error.py

@@ -53,6 +53,7 @@ class MockModelConfig:
     media_io_kwargs: dict[str, dict[str, Any]] = field(default_factory=dict)
     skip_tokenizer_init = False
     is_encoder_decoder: bool = False
+    is_multimodal_model: bool = False
 
     def get_diff_sampling_param(self):
         return self.diff_sampling_param or {}
@@ -78,7 +79,7 @@ def _build_serving_completion(engine: AsyncLLM) -> OpenAIServingCompletion:
 def _build_renderer(model_config: MockModelConfig):
     _, tokenizer_name, _, kwargs = tokenizer_args_from_config(model_config)
 
-    return HfRenderer(
+    return HfRenderer.from_config(
         MockVllmConfig(model_config),
         tokenizer_kwargs={**kwargs, "tokenizer_name": tokenizer_name},
     )