过滤无效图片问题

Nobody has claimed this yet.

## Current use version？
#### 当前使用的版本是多少？
3.11.1
```

```

## Will this problem occur in demo?
#### Demo能否复现这问题？
能
```

```

## Describe the problem or provide an error log？
#### 描述问题或提供错误log？
已经加载过的图片，在手机文件管理等途径删除后，依然能扫描出来占位图的图片，使用api的过滤无效
```

```

Start by reproducing the issue in the demo with PictureSelector 3.11.1: load an image, delete it through the phone's file manager, then scan again. Trace the API path used to filter scanned images and verify whether deleted files are excluded. Done means deleted images no longer appear as placeholder entries when filtering is used.

Written by the indexing model from the issue text.