remove attrgetter performace optimization

[Corvince]

Remove performace optimization to ease multi agent data collection.

This makes it possible to collect agent attributes with simple string values across multiple agent types.

Previously

agent_reporters={'a': 'val_a', 'b': 'val_b'}

would error if val_a or val_b is missing in some agents. Now it just returns None for that value.

And the performance drop should be barely noticable.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.11% ⚠️

Comparison is base (7f5a32e) 81.47% compared to head (d833e91) 81.36%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1809      +/-   ##
==========================================
- Coverage   81.47%   81.36%   -0.11%     
==========================================
  Files          15       15              
  Lines         896      891       -5     
  Branches      193      191       -2     
==========================================
- Hits          730      725       -5     
  Misses        142      142              
  Partials       24       24              

Files Changed	Coverage Δ
mesa/datacollection.py	88.76% <100.00%> (-0.60%)	⬇️

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[rht]

Ruff error.

[Corvince]

Oopsie, somehow my ruff extension for vscode only works roughly have the time and I almost always forget to check again. Should be fixed now.

[rht]

Still Ruff error.