Structure field: improve disabled UI

[distantnative]

Description

Summary of changes

• Table remains interactive when field is disabled: can open drawer (where form is disabled) to see all fields, can still paginate
• Fiber drawer: don't use disabled prop to hide drawers in the drawer stack. Instead using visible prop.

Screen.Recording.2025-05-10.at.18.30.01.mov

Reasoning

https://feedback.getkirby.com/687

Additional context

Since we used the :disabled prop in this way only in k-fiber-drawer, I think the change can be merged without being a breaking change.

Changelog

Enhancements

• Structure field: improved UI when field is disabled that allows to open drawer to see all fields as well as navigate through all entries when paginated

Ready?

• In-code documentation (wherever needed)
• Unit tests for fixed bug/feature
• Tests and CI checks all pass

For review team

• Add lab and/or sandbox examples (wherever helpful)
• Add changes & docs to release notes draft in Notion