Jellyfin 10.9.2 not adding media_player entities

[PixelPusher247]

The problem

After upgrading Jellyfin Media Server to 10.9.2 I noticed my media_player entities for Jellyfin went unavailable, I tried deleting the integration and readding and it only adds one entity for sensor.jellyfin with the amount of people watching, but this also does not report the correct data, not detecting when devices are playing media.

Everything was working fine with the previous version of Jellyfin, so they might have changed something on Jellyfin's side and the integration needs to be updated?

What version of Home Assistant Core has the issue?

core-2024.5.4

What was the last working version of Home Assistant Core?

core-2024.5.4

What type of installation are you running?

Home Assistant OS

Integration causing the issue

Jellyfin

Link to integration documentation on our website

https://www.home-assistant.io/integrations/jellyfin

Diagnostics information

No response

Example YAML snippet

No response

Anything in the logs that might be useful for us?

Sadly I could not find any errors in the logs, not even analyzing the complete debug logs, it just logs:
`2024-05-18 23:06:17.739 DEBUG (MainThread) [homeassistant.components.jellyfin] Finished fetching jellyfin data in 0.008 seconds (success: True)`
when adding the integration.

Additional information

No response

[home-assistant]

Hey there @j-stienstra, @ctalkington, mind taking a look at this issue as it has been labeled with an integration (jellyfin) you are listed as a code owner for? Thanks!

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[FibreFoX]

There are probably some API changes, at least looking at the TypeScript API client project, it is listed as "breaking changes" for the new 10.9.x releases of Jellyfin.
https://typescript-sdk.jellyfin.org/index.html#md:breaking-changes

Could not find any changes in the current released used python API client at https://pypi.org/project/jellyfin-apiclient-python/

Looking at jellyfin/jellyfin-apiclient-python#43 there might be a general issue with the latest pything client, so I assume there is a bit more work to be done.

After updating from 10.8.x to latest 10.9.x HA always reported "0 watching", which was used for some server shutdown automation but broke after the Jellyfin update 😸 thats why I took a look into this. Sorry for not having any clue how to solve this issue.