fix(rust, python): treat FSCK files_removed as strings

[liamphmurphy]

Description

This changes how the files_removed array is serialized, making it a stringified representation of the list of files. This is done to ensure compatibility with Spark.

To maintain the current behavior with the python bindings, the repair method wrapper in python will deserialize back to a list.

Related Issue(s)

closes #3140

[liamphmurphy]

if we don't care about maintaining the current response then we can omit this step, but for sake of breaking the interface, added a deserializing step here.

[ion-elgreco]

@liamphmurphy can you squash the commits please

[liamphmurphy]

@liamphmurphy can you squash the commits please

Done! Let me know if something isn't looking right.

[codecov]

Codecov Report

Attention: Patch coverage is 42.85714% with 8 lines in your changes missing coverage. Please review.

Project coverage is 72.30%. Comparing base (2f1a5ac) to head (3f11d97).
Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/core/src/operations/filesystem_check.rs	42.85%	7 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3219      +/-   ##
==========================================
- Coverage   72.31%   72.30%   -0.02%     
==========================================
  Files         138      138              
  Lines       45398    45412      +14     
  Branches    45398    45412      +14     
==========================================
+ Hits        32831    32833       +2     
- Misses      10489    10502      +13     
+ Partials     2078     2077       -1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.