[C++] Fix ambiguous overload of Type::createRowBatch

virtual std::unique_ptr<ColumnVectorBatch> createRowBatch(
  uint64_t size, MemoryPool& pool, bool encoded = false) const = 0;

virtual std::unique_ptr<ColumnVectorBatch> createRowBatch(
  uint64_t size, MemoryPool& pool, bool encoded = false,
  bool useTightNumericVector = false) const = 0;