[Optimizations and Bug Fixes]
1. Optimized Nemeses' Return Hall of Aces display, added "My Group" where you can view your specific rankings within their group.
2. Added a toggle for "Retro Filter". You can turn on/off the screen filter effects in Settings now.
3. Fixed the issue in Co-op Mode where you would still receive 1 star even after challenge failure.
4. Fixed the issue where co-op invitations would show "Already in a team" and prevent invitations.