EasyAFK (Fabric/Quilt/Forge/Neoforge)

### Bug Fixes

- Players can now use /afk command while sitting on modded chairs (previously blocked with "cannot go into AFK whilst jumping" error)
- Auto-AFK now works correctly when sitting on modded chairs
- Fixed false jump event detection from modded furniture that was incorrectly removing players from AFK
- Players can no longer mount horses or other rideable entities while AFK
- Attempting to sit on a chair while AFK is now properly blocked
- Dismounting from chairs while AFK now correctly maintains AFK status prevention

---

### Enhancements

- Added reusable canEnterAFK() method that validates player state before entering AFK
- Both manual /afk command and auto-AFK now use consistent validation logic
- Improved distinction between chairs (allowed) and rideable entities like horses/boats/minecarts (blocked)

---

### Technical Changes

- Updated passenger validation to check entity types (LivingEntity, Boat, AbstractMinecart)
- Chairs (non-living entities) are now correctly treated as valid AFK locations
- Jump event handlers now filter out false positives from sitting/standing animations using pose checks