Fix `copy_files` support with Parsl

[Andrew-S-Rosen]

Summary of Changes

Closes #1776.

Requires:

• https://github.com/Parsl/parsl/pull/3111

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 99.06%. Comparing base (0a1ec93) to head (f10c912).

:exclamation: Current head f10c912 differs from pull request most recent head 6cd9fac

Please upload reports for the commit 6cd9fac to get more accurate results.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1942      +/-   ##
==========================================
+ Coverage   99.04%   99.06%   +0.02%     
==========================================
  Files          81       81              
  Lines        3357     3323      -34     
==========================================
- Hits         3325     3292      -33     
+ Misses         32       31       -1     

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