Use int32 for where condition tensor

src/onnx/parse_where.cpp

@@ -56,6 +56,10 @@ struct parse_where : op_parser<parse_where>
             auto lens =
                 compute_broadcasted_lens(args[0]->get_shape().lens(), args[1]->get_shape().lens());
             lens = compute_broadcasted_lens(lens, args[2]->get_shape().lens());
+            
+            // Convert condition tensor to int32 to work around CK not supporting bool type
+            args[0] = info.add_instruction(make_op("convert", {{"target_type", shape::int32_type}}), args[0]);
+            
             if(args[0]->get_shape().lens() != lens)
             {
                 args[0] =