386 方向指示线锯齿严重，虽不影响开发但是感观很不好

### Cocos Creator version

3.8.6

### System information

win11

### Issue description

![Image](https://github.com/user-attachments/assets/54772f37-430f-4478-9e2f-642010f1a2b1)

### Relevant error log output

_No response_

### Steps to reproduce

none

### Minimal reproduction project

_No response_