Fix operations_to_node() return type

[rickwporter]

RATIONALE

Fix the return type for operations_to_node() in the layout tools area.

CHANGES

Fix return type to align with the intended.

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.53%. Comparing base (4be5621) to head (9ad6b94).
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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #218      +/-   ##
==========================================
- Coverage   99.58%   99.53%   -0.06%     
==========================================
  Files          33       33              
  Lines        3860     3860              
  Branches      703      703              
==========================================
- Hits         3844     3842       -2     
- Misses          0        1       +1     
- Partials       16       17       +1     

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