The "Stream" tab doesn't seem to show up anymore

Looking for instance at [Euro2024](https://www.competitiongroups.com/competitions/Euro2024) the "Stream" tab doesn't show up.
I did so in a private window to make sure to get the latest version of competition groups.

The information is definitely there though, since directly accessing the [stream](https://www.competitiongroups.com/competitions/Euro2024/stream) page does work.

Any idea what's up there?

I think competition groups looks at the `featuredCompetitorWcaUserIds`, and it seems properly setup in the WCIF; most activities in the green stage have featured competitor, and such an activity can be found in the [public WCIF](https://www.worldcubeassociation.org/api/v0/competitions/Euro2024/wcif/public) at `schedule.venues[0].rooms[2].activities[0].childActivities[0]`.

先檢查 Euro2024 賽事頁面和連結的公開 WCIF，尤其是 schedule.venues[0].rooms[2].activities[0].childActivities[0]，然後將缺少的分頁與可直接存取的 /competitions/Euro2024/stream 頁面進行比較。當有串流資訊和精選參賽者時顯示 Stream 分頁，同時直接的串流頁面繼續正常運作，即表示完成。

由索引模型根據 Issue 內容生成。