Fix "What's New" notification dot for Safari

What does this MR do and why?

The notification dot for "What's New" was incorrectly styled. This MR fixes it.

part of: #301152 (closed)

Changelog: Changed

Screenshots or screen recordings

Browser	Before	After
Safari
Chrome

How to set up and validate locally

1. Delete the display-whats-new-notification LocalStorage item from your browser. This item is responsible for displaying the notification dot.
2. Log in, upon entering you should see a notification dot above the Question mark on the top right of your screen, just left of your profile avatar menu item.
3. Verify it looks good.

MR acceptance checklist

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