Setting outputs for dynamic v1::Split (#4256)

Co-authored-by: Scott Cyphers <diyessi@users.noreply.github.com>

src/ngraph/op/fused/split.cpp

@@ -135,13 +135,11 @@ void op::v1::Split::validate_and_infer_types()
     NODE_VALIDATION_CHECK(
         this, axis_et.is_integral(), "The 'axis' input only accepts integral types");
 
-    if (input_value(1).get_node_shared_ptr()->is_constant())
+    if (input_value(1).get_node_shared_ptr()->is_constant() && data_ps.is_static())
     {
         const auto axis_input = as_type_ptr<op::Constant>(input_value(1).get_node_shared_ptr());
         auto axis = axis_input->cast_vector<int64_t>()[0];
 
-        if (data_ps.is_static())
-        {
         const auto data_shape = data_ps.to_shape();
         axis = ngraph::normalize_axis(this, axis, data_shape.size());
 
@@ -162,7 +160,6 @@ void op::v1::Split::validate_and_infer_types()
             set_output_type(i, input(0).get_element_type(), each_output_shape);
         }
     }
-    }
     else
     {
         for (size_t i = 0; i < m_num_splits; ++i)