Fix movie and tv show library quickplay support

[cewert]

Apparently my local server is bugged because when I coded quick play, movie and tv show libraries came through as collectionFolders but now they come through as userViews. This PR moves the quick play logic into a function and calls the fucntion from both paths.

Tested and working with my local and the stable demo server (a buggy and non-buggy server)

[1hitsong]

I went to my recording library, which has 1 season, which only has 1 video. I pressed Play on the season and it threw the following error:

This left the client stuck in this state:

[1hitsong]

The error above only occurs when I try to play an unwatched recording.

It's trying to use the IndexNumber property, but the item doesn't have that property.

    BackdropImageTags: <Component: roArray>
    ChannelId: invalid
    Container: "mpegts"
    Id: "865734ca38207d1a961733f8c321fa6e"
    ImageBlurHashes: <Component: roAssociativeArray>
    ImageTags: <Component: roAssociativeArray>
    IsFolder: false
    LocationType: "FileSystem"
    MediaType: "Video"
    Name: "2022 Field Hockey Championship: Virginia vs. North Carolina"
    ParentBackdropImageTags: <Component: roArray>
    ParentBackdropItemId: "3b4fc931bf2281e52243d2a198643de2"
    PremiereDate: "2023-10-19T00:00:00.0000000Z"
    ProductionYear: 2023
    RunTimeTicks: 542846656
    SeasonId: invalid
    SeasonName: "Season Unknown"
    SeriesId: "3b4fc931bf2281e52243d2a198643de2"
    SeriesName: "The Sixth Sense"
    SeriesPrimaryImageTag: "acacfbde1a129c9e92fa007cddd4c2ec"
    ServerId: "264f5f4ed7a8457c9fe28fbcc3769fb1"
    Type: "Episode"
    UserData: <Component: roAssociativeArray>
    VideoType: "VideoFile"
}`

[jellyfin-bot]

This pull request has merge conflicts. Please resolve the conflicts so the PR can be reviewed. Thanks!