[Transform] Fix accelerate import to keep it as optional dependency (#480)

Import has_offloaded_params from compressed_tensors.utils.offload instead of
accelerate.utils directly. This ensures accelerate remains optional and the
package can be imported without it installed.

The utils.offload module already has proper fallback handling with
@check_accelerate decorator that returns False when accelerate is not available.

Fixes ModuleNotFoundError when importing compressed_tensors without accelerate.

Author: tboerstad

src/compressed_tensors/transform/apply.py

@@ -15,9 +15,9 @@
 from typing import Dict
 
 import torch
-from accelerate.utils import has_offloaded_params
 from compressed_tensors import TRANSFORM_CONFIG_NAME
 from compressed_tensors.transform import TransformConfig, TransformFactory
+from compressed_tensors.utils.offload import has_offloaded_params
 
 
 __all__ = ["apply_transform_config"]