message: Fix invalid keras tensor isinstance check
diff: @@ -164,7 +164,7 @@ class InputLayer(base_layer.Layer):
  else:
  raise_eager_tensor_error = False
  if keras_tensor.keras_tensors_enabled():
  - if not isinstance(input_tensor, keras_tensor.keras_tensors_enabled()):
  + if not isinstance(input_tensor, keras_tensor.KerasTensor):
  raise_eager_tensor_error = True
  else:
  if not tf_utils.is_symbolic_tensor(input_tensor):
  