Technically you could already set `label: undefined` and it would be
supported by group fields but the types didn't reflect this.
So now you can create an unnamed group field like this:
```ts
{
type: 'group',
fields: [
{
type: 'text',
name: 'insideGroupWithNoLabel',
},
],
},
```
This will remove the label while still visually grouping the fields.

---------
Co-authored-by: Jacob Fletcher <jacobsfletch@gmail.com>