set BendingEnergyLoss default normalize to False

Maybe it's more important that the default behavior match usage of the
term "bending energy" elsewhere, rather than that it be the most
convenient behavior.

Signed-off-by: Ebrahim Ebrahim <ebrahim.ebrahim@kitware.com>

monai/losses/deform.py

@@ -52,12 +52,12 @@ class BendingEnergyLoss(_Loss):
         DeepReg (https://github.com/DeepRegNet/DeepReg)
     """
 
-    def __init__(self, normalize: bool = True, reduction: Union[LossReduction, str] = LossReduction.MEAN) -> None:
+    def __init__(self, normalize: bool = False, reduction: Union[LossReduction, str] = LossReduction.MEAN) -> None:
         """
         Args:
             normalize:
                 Whether to divide out spatial sizes in order to make the computation roughly
-                invariant to image scale (i.e. vector field sampling resolution). Defaults to True.
+                invariant to image scale (i.e. vector field sampling resolution). Defaults to False.
             reduction: {``"none"``, ``"mean"``, ``"sum"``}
                 Specifies the reduction to apply to the output. Defaults to ``"mean"``.