[Renderer] Separate out RendererConfig from ModelConfig (#30145)

Signed-off-by: DarkLight1337 <tlleungac@connect.ust.hk>

tests/v1/spec_decode/test_eagle.py

@@ -19,6 +19,7 @@ from vllm.config import (
     DeviceConfig,
     ModelConfig,
     ParallelConfig,
+    RendererConfig,
     SchedulerConfig,
     SpeculativeConfig,
     VllmConfig,
@@ -61,6 +62,7 @@ def _create_proposer(
 
     vllm_config = VllmConfig(
         model_config=model_config,
+        renderer_config=RendererConfig(model_config=model_config),
         cache_config=CacheConfig(),
         speculative_config=speculative_config,
         device_config=DeviceConfig(device=current_platform.device_type),