message: change name FeatureIDFromAccessor2 -> FeatureIDFromAccessor_Deprecated
diff: namespace {
  -struct FeatureIDFromAccessor2 {
  +struct FeatureIDFromAccessor_Deprecated {
  int64 operator()(std::monostate) { return -1; }
  int64 operator()(
  @@ -126,7 +126,7 @@ int64 UCesiumMetadataFeatureTableBlueprintLibrary::GetFeatureIDForVertex(
  UPARAM(ref) const FCesiumMetadataFeatureTable& FeatureTable,
  int64 vertexIdx) {
  return std::visit(
  - FeatureIDFromAccessor2{vertexIdx},
  + FeatureIDFromAccessor_Deprecated{vertexIdx},
  FeatureTable._featureIDAccessor);
  }
  