Notification modal has inconsistent tab orders depending on the browser.

On firefox, things look okay. On chrome, this order is less consistent and can be confusing for keyboard users:

```
In the dialog activated by the button “not set yet” and “followed”, there are a list of three radio buttons. In addition, for each radio button, a tooltip button shows/hides text.
If no radio button is checked, the focus order is the following: radio button 1, tooltip 1, radio button 2, tooltip 2, radio button 3, and tooltip 3.
If a radio button is selected, the focus order changes to: radio button 1, 2 and 3, tooltip 1, 2 and 3. In that situation, there is a disconnection between radio buttons of the same set of radio buttons.
```

quote from a user accessibility audit.