Trying a better way of getting length

Signed-off-by: Eric Kerfoot <[email protected]>

monai/engines/workflow.py

@@ -12,9 +12,8 @@
 from __future__ import annotations
 
 import warnings
-from collections.abc import Callable, Iterable, Sequence
+from collections.abc import Callable, Iterable, Sequence, Sized
 from typing import TYPE_CHECKING, Any
-from collections.abc import Sized
 
 import torch
 import torch.distributed as dist