Let max_num_batched_tokens use human_readable_int for large numbers (#18968)

Signed-off-by: mgoin <mgoin64@gmail.com>

vllm/engine/arg_utils.py

@@ -224,7 +224,7 @@ def get_kwargs(cls: ConfigType) -> dict[str, Any]:
         elif contains_type(type_hints, int):
             kwargs[name]["type"] = int
             # Special case for large integers
-            if name in {"max_model_len"}:
+            if name in {"max_model_len", "max_num_batched_tokens"}:
                 kwargs[name]["type"] = human_readable_int
         elif contains_type(type_hints, float):
             kwargs[name]["type"] = float