Update for loading MetaTensor

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

Author: ericspod

monai/data/meta_tensor.py

@@ -609,4 +609,5 @@ def print_verbose(self) -> None:
             print(self.meta.__repr__())
 
 
-torch.serialization.add_safe_globals([MetaTensor])
+if hasattr(torch.serialization,"add_safe_globals"):
+    torch.serialization.add_safe_globals([MetaTensor])