Restore ordering of w

[dweindl]

With #3036, the ordering of w symbols and expressions has changed. This is not a problem per se, but would require recreating the test oracles for the models in models/.
Therefore, don't do any unnecessary reordering.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.44%. Comparing base (6039cec) to head (890c839).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3051      +/-   ##
==========================================
- Coverage   78.13%   77.44%   -0.70%     
==========================================
  Files         311      311              
  Lines       20589    20593       +4     
  Branches     1499     1499              
==========================================
- Hits        16088    15948     -140     
- Misses       4491     4635     +144     
  Partials       10       10              

Flag	Coverage Δ
cpp	70.70% <100.00%> (-0.05%)	⬇️
cpp_python	37.17% <71.42%> (-0.04%)	⬇️
petab	45.81% <71.42%> (-0.04%)	⬇️
petab_sciml	13.80% <85.71%> (+0.01%)	⬆️
python	69.38% <100.00%> (-0.04%)	⬇️
sbmlsuite-jax	?

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Files with missing lines	Coverage Δ
python/sdist/amici/de_model.py	91.55% <100.00%> (-0.12%)	⬇️
python/sdist/amici/importers/sbml/__init__.py	82.50% <100.00%> (-11.95%)	⬇️

... and 7 files with indirect coverage changes

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