Fix library sync missing movies contained in Box Sets

[bigmong]

After doing some work on one of my scripts, I needed to add collapseBoxSetItems to the request, or I never got collections.

Think this is the same problem as #403. I have manually edited this file on my server and rerun a full sync; now the total number of Movies and Shows files matches what Jellyfin displays in the dashboard.

[itsmeares]

I reproduced this issue in Jellyfin 12.0.0 RC5 with Jellystat 1.1.11.

Before applying collapseBoxSetItems=false, Jellystat's full sync only kept:

• 20 / 51 movies active
• 9 / 34 series active
• 267 episodes active, despite Jellyfin returning the full episode inventory

The recursive library response contained episodes referencing 34 distinct SeriesIds, but only returned 9 Series items. Jellystat consequently archived the missing parent series and then archived their child seasons/episodes during cleanup.

After applying collapseBoxSetItems=false and running a full sync, the active Jellystat database matched the current Jellyfin library:

• 51 movies
• 34 series
• 100 seasons
• 1019 episodes

Library sizes and file counts also matched.

So this fixes the issue on Jellyfin 12 as well, and prevents valid series/episodes from being incorrectly archived during full sync.