Updated entity interaction and game state

Significant changes include:
- Disabled input pickability for DeathBox in Dog entity
- Simplified mouse click detection logic in Snail script
- Removed unnecessary conditions and actions from snail eating state
- Adjusted cursor hotspot position for hand cursor in Cursor Manager
- Reset flower nectar level upon game reset

utility/game_state.gd

@@ -118,3 +118,4 @@ func reset() -> void:
 	drones_used = 0
 	dead_bees = 0
 	spawn_snails = false
+	flower_nectar_level = max_flower_nectar_level