regression: wrong unread count on favicon

[juliajforesti]

ARCH-1633

Proposed changes (including videos or screenshots)

favicon unread badge was being duplicated:

fix:

• move manageFavicon out of useUnread hook

Issue(s)

Steps to test or reproduce

Further comments

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.57%. Comparing base (e9904fe) to head (bcdb090).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop   #36150   +/-   ##
========================================
  Coverage    64.56%   64.57%           
========================================
  Files         3123     3123           
  Lines        97850    97850           
  Branches     18528    18527    -1     
========================================
+ Hits         63178    63184    +6     
+ Misses       31851    31843    -8     
- Partials      2821     2823    +2     

Flag	Coverage Δ
e2e	57.59% <100.00%> (+0.02%)	⬆️
unit	69.88% <ø> (-0.01%)	⬇️

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