Unable to get `playlist_items` on playlist containing episode

[VAWVAW]

Trying to deserialize an episode from the data provided in /playlists/{}/tracks results in a serde error data did not match any variant of untagged enum. This is because the returned episode is missing the description field of FullEpisode.
I tried to add description to fields but the api seems to ignore it.

The only fix I see is to remove description from SimplifiedEpisode and make PlayableItem contain the simplified version.