Some activities are hidden and others are wrongly groupped

See [Jasło Cubing Days 2026](https://www.competitiongroups.com/competitions/JasloCubingDays2026/activities) (but this is not the only competition with those bugs).

Some activities (like lunch, awards etc) aren't visible in the Schedule tab. Some others (like check-in) has wrong start and end times listed (see image below). My guess is that they're grouped by their activity code which is the same (`other-misc`).

Also, I personally really liked the previous version with activity start and end times listed just below the title, not on the right side (see image below), but that's just my personal opinion

在 Jasło Cubing Days 2026 的活動頁面上重現此問題，並檢查 Schedule 分頁，重點關注帶有 `other-misc` 代碼的活動如何分組。將顯示的活動與時間與連結的比賽頁面及螢幕截圖進行比較。當午餐、頒獎、報到和其他活動都個別顯示，並具有正確的開始和結束時間時，即表示完成。

由索引模型根據 Issue 內容生成。