Fix amici.petab.import_helpers._can_import_model

[dweindl]

• Use import_model_module
• Use only the provided path, add set_path context manager
• ModuleNotFoundError instead of FileNotFoundError

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.61%. Comparing base (4fcb14d) to head (d5ca083).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #2603   +/-   ##
========================================
  Coverage    77.60%   77.61%           
========================================
  Files          329      329           
  Lines        21693    21701    +8     
  Branches      1477     1477           
========================================
+ Hits         16835    16843    +8     
  Misses        4847     4847           
  Partials        11       11           

Flag	Coverage Δ
cpp	73.48% <100.00%> (+<0.01%)	⬆️
cpp_python	34.14% <100.00%> (+0.02%)	⬆️
petab	36.96% <100.00%> (+<0.01%)	⬆️
python	72.21% <100.00%> (+0.01%)	⬆️

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Files with missing lines	Coverage Δ
python/sdist/amici/__init__.py	95.45% <100.00%> (+1.01%)	⬆️
python/sdist/amici/petab/import_helpers.py	85.93% <ø> (ø)