config: constructing a config no longer resolves it (#35907)

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

examples/runtime/engine/save_sharded_state.py

@@ -22,7 +22,6 @@ llm = Engine(
 )
 """
 
-import dataclasses
 import os
 import shutil
 from argparse import ArgumentParser
@@ -49,11 +48,12 @@ parser.add_argument(
 
 def main(args):
     engine_args = ServerArgs.from_cli_args(args)
+    engine_args.resolve_once()
     model_path = engine_args.model_path
     if not Path(model_path).is_dir():
         raise ValueError("model path must be a local directory")
     # Create LLM instance from arguments
-    llm = Engine(**dataclasses.asdict(engine_args))
+    llm = Engine(server_args=engine_args)
     Path(args.output).mkdir(exist_ok=True)
     llm.save_sharded_model(
         path=args.output, pattern=args.file_pattern, max_size=args.max_file_size