Update ReplaceSingleElementTensorArgumentsFromFullOpWithScalarPass to check if is_tensor() is valid

Differential Revision: D83861005

Pull Request resolved: #14798

Author: ethansfng

backends/cadence/aot/replace_ops.py

@@ -1590,7 +1590,7 @@ def call_operator(self, op, args, kwargs, meta):
         updated_args = list(args)
         for op_arg_index in args_to_be_replaced:
             arg = args[op_arg_index]
-            if not arg.is_tensor():
+            if not isinstance(arg, ProxyValue) or not arg.is_tensor():
                 return super().call_operator(op, args, kwargs, meta)
 
             if not isinstance(arg.node.target, EdgeOpOverload):