API: Don't fallback to default values on model load request

It's best to pass them down the config stack.

API/User config.yml -> model config.yml -> model config.json -> fallback.

Doing this allows for seamless flow and yielding control to each
member in the stack.

Signed-off-by: kingbri <bdashore3@proton.me>

endpoints/core/utils/model.py

@@ -95,8 +95,10 @@ async def stream_model_load(
 ):
     """Request generation wrapper for the loading process."""
 
+    # Get trimmed load data
+    load_data = data.model_dump(exclude_none=True)
+
     # Set the draft model path if it exists
-    load_data = data.model_dump()
     if draft_model_path:
         load_data["draft"]["draft_model_dir"] = draft_model_path