[2026-02-10][fix][general] Remove redundant `Tickets.length` check and add optional chaining to `Tickets.findIndex`.

👤 Author : Dapanel
🌿 Branch : main
🔗 Commit : b8becae
📅 Date : 2026-02-10
📝 Note :
fix: Remove redundant Tickets.length check and add optional chaining to Tickets.findIndex.