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

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.42%. Comparing base (ce0cb3b) to head (68b9d60).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6425      +/-   ##
==========================================
+ Coverage   81.44%   82.42%   +0.98%     
==========================================
  Files         230      230              
  Lines       73726    73729       +3     
==========================================
+ Hits        60044    60773     +729     
+ Misses      13682    12956     -726     

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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.