LiveEditor Keyboard accessibility; No key present to take focus to previous or next interactive element

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Code of Conduct

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### Code Sandbox link

TODO

### Bug report

```markdown
When using keyboard navigation (TAB-key) to set focus to the live editor, it is not possible to exit the editor focus state. TAB is used to manage the indentation of text, which prevents pressing TAB-key to move focus outside the editor.

Easiest reproducable demo:
- Create a page with code:





- Open the page and click the first button to set focus
- Press TAB-key to move focus to the LiveEditor
- Press TAB-key again to move focus to last button
- LiveEditor added indentation instead of moving focus.

Expected behavior would be to move focus to last button, or provide another way to exit the LiveEditor with keyboard.
```