Fix: chmod +w files after copying them

[emmercm]

Fixes: #1080

[github-actions]

🧪 Branch testing instructions

This pull request can be tested locally with the following command:

npm exec --yes -- "github:emmercm/igir#emmercm/fs-copy-chmod" [commands..] [options]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.36%. Comparing base (81cb28c) to head (1073cac).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1086   +/-   ##
=======================================
  Coverage   93.35%   93.36%           
=======================================
  Files          92       92           
  Lines        6036     6040    +4     
  Branches     1438     1439    +1     
=======================================
+ Hits         5635     5639    +4     
  Misses        380      380           
  Partials       21       21           

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[github-actions]

🔒 Inactive pull request lock

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.

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