The announcements counter in the News menu changes at any refresh of the page when relay add-on is installed

[Bianca-O]

Build:
Stage

Affected platforms:
Windows 10 64-bit

Browsers tested on:
Firefox, latest release

Prerequisites:
The user is logged in to Firefox Relay.
The relay add-on is installed.

Steps to reproduce:

1. Open the Relay dashboard.
2. Click FAQ menu and observe the News counter badge.
3. Click Home menu and observe the News counter badge.
4. Click Refresh button in the browser and observe the News counter badge.

Actual result:
The announcement counter in the News menu changes. The number decreases and then increases again.

Expected result:
The announcement counter in the News menu doesn't change.

Notes:
This occurs only when the relay add-on is installed.