🐛Bug: Radio-group top-level component is focusable

[PickleyD]

Describe the bug
When navigating with keyboard the top-level component is focused before the user can move on to focus on the individual radio buttons. This behaviour differs from Radix.

To Reproduce
Steps to reproduce the behavior:

1. Navigate to the component using Tab key

Expected behavior
The top-level component should not be focusable with keyboard. Focus should instead pass straight through to the individual radio buttons.

Screenshots

Radix:

Radix-svelte: