`(null)` as episode number

[MelanX]

Describe the bug

1. Open a TV series
2. Navigate to an episode
3. Look at the episode number -> (null)

Maybe it's just a translation problem, I'm using Swiftfin on German and it said Folge (null).

Application version

1.0.0 (83)

Where did you install the app from?

TestFlight

Device information

Apple TV 4K (2022)

OS version

tvOS 16.1.1 (20K80)

Jellyfin server version

10.8.7

[bzzim]

already fixed #613