Don't search for icon path if icons are disabled

[bynect]

Close #1114

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Codecov Report

❌ Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 65.06%. Comparing base (15b1e8c) to head (8ca7f8e).
⚠️ Report is 376 commits behind head on master.

Files with missing lines	Patch %	Lines
src/notification.c	75.00%	1 Missing ⚠️
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Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1301   +/-   ##
=======================================
  Coverage   65.06%   65.06%           
=======================================
  Files          48       48           
  Lines        8173     8173           
=======================================
  Hits         5318     5318           
  Misses       2855     2855           

Flag	Coverage Δ
unittests	65.06% <75.00%> (ø)

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[bynect]

This should work unless you can enable icons to an old notification with disabled icons. Because at that point the notification wouldn't have loaded the icon. However I don't think there is a way to change icon_position between creation and display (?)

[zappolowski]

Please rebase to current master and squash the 2nd commit into the first one.