Fix example and add SciMLOperators v0.4 compatibility

[mateuszbaran]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.62%. Comparing base (95266af) to head (53be256).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #42   +/-   ##
=======================================
  Coverage   92.62%   92.62%           
=======================================
  Files           9        9           
  Lines         488      488           
=======================================
  Hits          452      452           
  Misses         36       36           

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