List component accessibility issues

[Febakke]

Description of the bug

There are multiple issues with our list component

1. Users cant navigate the radiobuttons using the arrow-keys
2. No focus visible on radio buttons
3. Radiobuttons are not grouped. This will confuse users as screen readers will say radiobutton 1 of 1.
4. "rader per side" is not connected to the label.

• [ ] Consider recreating this with designsystem components.

Steps To Reproduce

Go to an app with a list and run accessiblity tests

Additional Information

No response

[Febakke]

• [ ] Add screenshots showing of the bugs @Febakke
• [ ] Consider fixing excisting List or build new using designsystem components

[olavflar]

Related to; #2373