Test possibility of layout and data connected components

We have the case where certain Fields in the Trace UI need to update layout.

So something like this needs to be possible:

```js
<TraceFold>
    <LayoutThing>
         <SpecialFieldThatMayNeedBothContainersButUpdatesToLayout />
    </LayoutThing>
</TraceFold>
```

Example: `bargroupgap` `boxgroupgap` 