Add is_rarfile() to patched functions. Fixes #3222

[medariox]

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[codecov-io]

Codecov Report

Merging #3657 into develop will increase coverage by <.01%.
The diff coverage is 100%.

@@             Coverage Diff             @@
##           develop    #3657      +/-   ##
===========================================
+ Coverage    28.94%   28.94%   +<.01%     
===========================================
  Files          275      275              
  Lines        34927    34928       +1     
===========================================
+ Hits         10109    10110       +1     
  Misses       24818    24818

Impacted Files	Coverage Δ
medusa/init/filesystem.py	35.71% <100%> (+0.93%)	⬆️

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