feat: include one theme in builds

[mxschll]

Description

Includes One Theme in deployed dev pages. Does not affect the release workflow as it is a separate build.

Related links, issue #, if available: n/a

How has this been tested?

Review checklist

The following items are to be evaluated by the author(s) and the reviewer(s).

Correctness

• Changes include appropriate documentation updates.
• Changes are backward-compatible if not indicated, see CONTRIBUTING.md.
• Changes do not include unsupported browser features, see CONTRIBUTING.md.
• Changes were manually tested for accessibility, see accessibility guidelines.

Security

• If the code handles URLs: all URLs are validated through the checkSafeUrl function.

Testing

• Changes are covered with new/existing unit tests?
• Changes are covered with new/existing integration tests?

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.67%. Comparing base (e404a45) to head (ad0d978).
⚠️ Report is 8 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4989   +/-   ##
=======================================
  Coverage   97.67%   97.67%           
=======================================
  Files         960      960           
  Lines       31376    31376           
  Branches    11597    11597           
=======================================
  Hits        30645    30645           
  Misses        724      724           
  Partials        7        7           

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