Fix base element href include localhost

[stephanie56]

Issue: #AP-6057

What Changed

When the app use a base url, it's usually a path like /some/path. But the DOM snapshot output that we are getting localhost value. This PR remove the localhost value if there is any, if the base url doesn't include localhost, return whatever value as it is.

How to test

1. Test with chromatic review
   Before fix: https://6595c5968c95bd964ba59382-ukxkpmtgaw.chromatic.com/?path=/story/archiving-assets-assets-from-css-urls-are-archived--snapshot-1&globals=viewport:w1000h660
   After fix: https://6595c5968c95bd964ba59382-wxgdisaoqj.chromatic.com/?path=/story/archiving-assets-assets-from-css-urls-are-archived--snapshot-1&globals=viewport:w1000h660
2. Test locally:

• pull the main branch and add a base element <base href="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/" /> to this page test-server/fixtures/asset-paths/css-urls.html
• run yarn test:cypress, then yarn archive-storybook:cypress to observe this story assets-from-css-urls-are-archived--snapshot. You can notice some images are missing.
• pull this branch and run the same steps, all the images are loaded.
• check the html of the story, the base url should be / instead of http://localhost300.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.73%. Comparing base (87c85ab) to head (8bc8d59).
⚠️ Report is 11 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #271      +/-   ##
==========================================
+ Coverage   95.64%   95.73%   +0.09%     
==========================================
  Files          14       14              
  Lines         390      399       +9     
  Branches       67       69       +2     
==========================================
+ Hits          373      382       +9     
  Misses         17       17              

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[andrewortwein]

Looks good, but I left a comment that I'd like to resolve before approving.

[andrewortwein]

Thanks for adding a separate test for this. Looks great! 👍🏻