track artist (originalTitle instead of grandparentTitle)

[Dyvinia]

Is your feature request related to a problem? Please describe.
the originalTitle field exists for some media while it is null for others, typically it contains the artist of a music track when it is not the same as the album.

Describe the solution you'd like
From what I was able to tell, this api discards this information, would it be possible to make it a nullable field instead?

Describe alternatives you've considered/Additional context
I ended up requesting the session data myself rather than using the api here (between lines 108 and 131). please note that I'm more on a beginner/intermediate skill level when it comes to coding so I did things very unconventionally/incorrect in the app