`DataTypeFactory::get` locks a mutex inside shared a context, there was a case when many threads were locked inside it

https://pastila.nl/?0043b3e6/c557368f4cf0eb87a3c6f2cc162bc693

It is not clear which thread locked the mutex for a long time. However, it may be possible to lock less inside `DataTypeFactory::get`.
{
    auto lock = getLock();
    shared->dictionaries_lib_path = path;
}
void Context::setUserScriptsPath(const String & path)
{
    auto lock = getLock();
    shared->user_scripts_path = path;
}
void Context::setUserDefinedPath(const String & path)
{
    auto lock = getLock();
    shared->user_defined_path = path;
}
void Context::addWarningMessage(const String & msg)
{
    auto lock = getLock();
    shared->addWarningMessage(msg);
}
void Context::setConfig(const ConfigurationPtr & config)
{
    auto lock = getLock();
    shared->config = config;
    shared->access_control->setExternalAuthenticatorsConfig(*shared->config);
}
const Poco::Util::AbstractConfiguration & Context::getConfigRef() const