resources: generic pages don't have a "structured" view therefore the default selection is empty

### Kuma Version

2.13.x

### Describe the bug

See below:

<img width="1005" height="395" alt="Image" src="https://github.com/user-attachments/assets/68468b41-8890-4c62-bb7a-f9985f3a4fe8" />

### To Reproduce

_No response_

### Expected behavior

_No response_

### Additional context (optional)

_No response_