Fixed Simulation.exports setter

[RemDelaporteMathurin]

Proposed changes

Fixes #833

Types of changes

What types of changes does your code introduce to FESTIM?

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Code refactoring
• Documentation Update (if none of the other choices apply)
• New tests

Checklist

• Black formatted
• Unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.58%. Comparing base (31864c8) to head (d34a463).
Report is 72 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #836      +/-   ##
==========================================
+ Coverage   99.55%   99.58%   +0.02%     
==========================================
  Files          61       61              
  Lines        2724     2874     +150     
==========================================
+ Hits         2712     2862     +150     
  Misses         12       12              

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[RemDelaporteMathurin]

@KulaginVladimir would you mind giving this a quick look? I think this is a result of these classes now inheriting from list

[KulaginVladimir]

The fix should work 👌🏻

Unfortunately, I can't check it thoroughly at the moment. As I understand, the problem was only with derived quantities, right?