Faster fill_in_parameters_for_condition

[dweindl]

Avoid unnecessary repeated dict creation.
This matters for problems with large numbers of parameters.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.83%. Comparing base (a8da9cb) to head (f25a77b).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #2586   +/-   ##
========================================
  Coverage    77.83%   77.83%           
========================================
  Files          325      325           
  Lines        21852    21853    +1     
  Branches      1456     1456           
========================================
+ Hits         17008    17009    +1     
  Misses        4833     4833           
  Partials        11       11           

Flag	Coverage Δ
cpp	73.74% <0.00%> (-0.01%)	⬇️
cpp_python	34.21% <100.00%> (+<0.01%)	⬆️
petab	37.16% <100.00%> (+<0.01%)	⬆️
python	72.54% <100.00%> (+<0.01%)	⬆️

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Files with missing lines	Coverage Δ
python/sdist/amici/petab/conditions.py	97.45% <100.00%> (+0.02%)	⬆️

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