[BUG] Unable to properly recognize language in MKV container

[Dan64]

Hello Selur,

  I'm using Hybrid 2023.04.18.1 and I found that in some case Hybrid is unable to properly recognize the language of tracks in MKV containers.
  This happen if in the container is specified not only the language code but also the region code (for example "en-US" instead of "en-GB").
  This problem affect not only the output of the encoded video but also the language selection in "Config->Automation->Passthrough streams", when are selected the languages to be exported by Hybrid.
   An example of video with this problem is avalilabe at this link: https://file.io/IoVPeGG7mJ2F
(the file will be deleted after the download)

   I hope that you will be able to fix this problem.

Thanks,
Dan