在@eva/miniprogram-pixi中返回setting/UPDATE_PRIORITY

### Expected Behavior

### Current Behavior
目前没有导出 setting/UPDATE_PRIORITY 导致lottie报错
### Possible Solution

### Steps to Reproduce

### Environment

- **`Eva.js` version**: _e.g. 1.2.5
- **Browser & Version**: _e.g. Chrome 67_
- **OS & Version**: _e.g. MacOS 10.15.7_
- **Running Example**: _url_