Optimized for 2023-11-02

Optimized for 2023-11-02
1. Optimized the special effects performance after the character is on fire
2. Turn off the step check of production zombies to improve performance
3. Reduced the maximum number of zombies in Survival mode
4. Fixed some bush material effects
新游戏模式仍然在开发中，祝你一天好心情~
The new game mode is still under development, have a good day