Image tag "valueList" property does not work

**Describe the bug**
According to [image tag docs,](https://labelstud.io/tags/image) there's a "valueList" property that allow to display a list of images defined in a data variable.
In the bottom of the docs there's an example for this feature. The example is broken as well, and does not display anything.

**To Reproduce**
Steps to reproduce the behavior:
1. Create a new project with the following custom template
```

```
2. upload the following data file
```
{
"data": { "images": ["https://picsum.photos/200/200", "https://picsum.photos/200/200", "https://picsum.photos/200/200"]}
}
```
3. go to created task, images are not visible

**Expected behavior**
images should be visible

**Screenshots**

**Environment (please complete the following information):**
- OS: Ubuntu
- Browser: google chrome
- Label Studio Version - label studio cloud (free trial)