message: Match input tensor index too when trying to find associated labels.
  To validate the metadata to extract label files, NLClassifier was only matching TensorMetadataName. We'll need to also try match with metadata index.
diff: @@ -364,9 +364,11 @@ absl::Status NLClassifier::Initialize(const NLClassifierOptions& options) {
  // well-formatted metadata should have same number of tensors with the model.
  if (output_tensor_metadatas &&
  output_tensor_metadatas->size() == output_tensors.size()) {
  - for (const auto& metadata : *output_tensor_metadatas) {
  - if (metadata->name() &&
  - metadata->name()->string_view() == options.output_score_tensor_name) {
  + for (int i = 0; i < output_tensor_metadatas->size(); ++i) {
  + const tflite::TensorMetadata* metadata = output_tensor_metadatas->Get(i);
  + if ((metadata->name() && metadata->name()->string_view() ==
  + options.output_score_tensor_name) ||
  + i == options.output_score_tensor_index) {
  if (TrySetLabelFromMetadata(metadata).ok()) {
  return absl::OkStatus();
  }
  