Dynamically manage rows in a subform component

### Description

Rows in the subform component is just a representation of the underlying subforms in the application. By default the user can get a **Add button** allowing them to add more subforms to the list. However, sometimes the number of subforms and the type of data within are known and can be calculated based on values in the main form. And further more, the user should not be allowed to add or delete subforms manually. In these cases the subforms are created programatically and presented to the user giving them the option to edit and complete them.

### Additional Information

_No response_

### Tasks

_No response_

### Acceptance Criterias

_No response_

The issue names only the subform component; start there and trace how rows and the Add/delete controls are managed. Because no tasks, acceptance criteria, files, or tests are provided, first define the expected API and completion checks for programmatically created rows while keeping them editable and disabling manual add/delete.

Written by the indexing model from the issue text.