fix: Mark as unread redirecting even if you don't have the channel open

[MartinSchoeler]

Proposed changes (including videos or screenshots)

Fixed issue that caused the mark as unread channel action to redirect you to home, even if you didn't have the channel currently open

Requires #32939

[dionisio-bot]

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Latest commit: 0f3c88c

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.80%. Comparing base (f07fcc5) to head (0f3c88c).

Additional details and impacted files

@@                 Coverage Diff                 @@
##           fix/mark-unread   #32971      +/-   ##
===================================================
+ Coverage            59.32%   59.80%   +0.48%     
===================================================
  Files                 2547     2546       -1     
  Lines                63345    63240     -105     
  Branches             14258    14231      -27     
===================================================
+ Hits                 37579    37822     +243     
+ Misses               23061    22998      -63     
+ Partials              2705     2420     -285     

Flag	Coverage Δ
unit	77.22% <ø> (+2.02%)	⬆️

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