Missing the 64bit equivalent to [`FlatBufferBuilder::CreateVector(const std::vector<bool>&)`](https://github.com/google/flatbuffers/blob/82396fa0fe9a61e7a30bdd008e180d56f5e49ebf/include/flatbuffers/flatbuffer_builder.h#L848). Otherwise the `CreateVector64(const std::vector<bool>&)` fails due to std::vector<bool> bit packing.