docs: test theme gallery options

[Revathyvenugopal162]

Description

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Issue linked

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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 unit tests.
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved to the PR if any.
• I have assigned this PR to myself.
• I have added the minimum version decorator to any new backend method implemented.
• I have made sure that the title of my PR follows Conventional commits style (e.g. feat: extrude circle to cylinder)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.98%. Comparing base (67c71b7) to head (40d5a95).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2666   +/-   ##
=======================================
  Coverage   92.98%   92.98%           
=======================================
  Files         175      175           
  Lines       15057    15057           
=======================================
  Hits        14001    14001           
  Misses       1056     1056           

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[codacy-production]

Up to standards ✅

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