FIX: Fix equivalent circuit export

[Samuelopez-ansys]

Description

Please provide a brief description of the changes made in this pull request.

Issue linked

Close #5936

Checklist

• I have tested my changes locally.
• I have added necessary documentation or updated existing documentation.
• I have followed the coding style guidelines of this project.
• I have added appropriate tests (unit, integration, system).
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved by the PR if any.
• I have agreed with the Contributor License Agreement (CLA).

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.23%. Comparing base (31eec2c) to head (36bee9c).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6139   +/-   ##
=======================================
  Coverage   85.23%   85.23%           
=======================================
  Files         167      167           
  Lines       63629    63635    +6     
=======================================
+ Hits        54232    54242   +10     
+ Misses       9397     9393    -4     

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