Treat a dynamic list with no visual elements as empty

[Skaiir]

Describe the Bug

Currently it is possible to have a dynamic list with no visual elements (expression). This means we can add a bunch of empty rows to a dynamic list. While this affects the state normally, we would rather simply not allow this.

Steps to Reproduce

1. Add a dynamic list
2. Add an expression component inside
3. Dynamic list can be interacted with

Expected Behavior

3. Dynamic list should be treated as empty, both:

• in form-viewer
• in linting rules