Use single UnifiedIcon in Advanced Installer Views

[Sewer56]

This tiny PR brings makes the AdvancedInstaller's icon presentation strategy to match the strategy used in the new View Mod Files functionality.

i.e. Applying ViewModFiles PR Feedback to Advanced Installer

I.e. We now no longer hide icons, but swap them out.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 55.39%. Comparing base (5a6319b) to head (2b90dc4).

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Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1057   +/-   ##
=======================================
  Coverage   55.38%   55.39%           
=======================================
  Files         659      659           
  Lines       21886    21886           
  Branches     1709     1709           
=======================================
+ Hits        12122    12123    +1     
  Misses       9364     9364           
+ Partials      400      399    -1     

Flag	Coverage Δ
Linux	54.72% <ø> (+0.07%)	⬆️
Windows	54.65% <ø> (+0.08%)	⬆️
clean_environment_tests	55.37% <ø> (ø)
macOS	54.09% <ø> (-0.01%)	⬇️

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see 2 files with indirect coverage changes