FIX: analyze_from_zero

[anur7]

Description

This PR fixes the bug in analyze_from_zero() method in maxwell.py.
The missing unit test of the will also be added in this PR.

Issue linked

Issue #6404

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

❌ Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 41.74%. Comparing base (fea45cf) to head (f3f3b42).

❌ Your patch check has failed because the patch coverage (0.00%) is below the target coverage (85.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #6425       +/-   ##
===========================================
- Coverage   81.93%   41.74%   -40.20%     
===========================================
  Files         236      236               
  Lines       75770    75773        +3     
===========================================
- Hits        62082    31630    -30452     
- Misses      13688    44143    +30455     

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[nunesanderson]

@gmalinve I will leave it to you to approve it.
Thanks @anur7 for fixing the issue.

[gmalinve]

@anur7 see my comments.

[SMoraisAnsys]

Just à minor comment