docs: note that enforce_eager also disables torch.compile (#55271)

Signed-off-by: Anshul Desai <36732940+AnshulDesai@users.noreply.github.com>

vllm/config/model.py

@@ -242,7 +242,10 @@ class ModelConfig:
     """Whether to always use eager-mode PyTorch. If True, we will disable CUDA
     graph and always execute the model in eager mode. If False, we will use
     CUDA graph and eager execution in hybrid for maximal performance and
-    flexibility."""
+    flexibility.
+
+    NOTE: This disables both `torch.compile` and CUDA graphs, and is
+    equivalent to setting `-cc.mode=none -cc.cudagraph_mode=none`."""
     enable_return_routed_experts: bool = False
     """Whether to return routed experts."""
     return_sampling_mask: bool = False