[ic-radio-group] updating orientation after initial render doesn't work

## Summary of the bug
When setting orientation on the radio group, it only updates to the correct orientation after a page refresh, when it should toggle the boolean value correctly.

## 🪜 How to reproduce
Tell us the steps to reproduce the problem:
1. Go to storybook playground
2. Toggle orientation
3. See the error

## 🧐 Expected behaviour
Should be able to toggle between vertical and horizontal orientation without page refresh.

Start in the Storybook playground and reproduce the issue by toggling the ic-radio-group orientation after initial render. Trace the TypeScript implementation for the orientation property and verify the component can switch between vertical and horizontal states without a page refresh.

Written by the indexing model from the issue text.