BUG: Preferences can use wrong value for UseOoc and disable parallelization

[JDuffeyBQ]

void Preferences::checkUseOoc()
{
  m_UseOoc = !value(k_PreferredLargeDataFormat_Key).get<std::string>().empty();
}

IParallelAlgorithm::IParallelAlgorithm()
{
#ifdef SIMPLNX_ENABLE_MULTICORE
  // Do not run OOC data in parallel by default.
  m_RunParallel = !Application::GetOrCreateInstance()->getPreferences()->useOocData();
#endif
}

This will set m_UseOoc to true if the json contains any string value. The preferences could have "In-Memory" and m_UseOoc would still be true and disable parallelization.