chore: Light dark dev pages

[georgylobko]

Description

Bring back this PR: #3896

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 97.18%. Comparing base (a5c0ddf) to head (344a5bb).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3982   +/-   ##
=======================================
  Coverage   97.18%   97.18%           
=======================================
  Files         858      858           
  Lines       25319    25319           
  Branches     8987     8986    -1     
=======================================
  Hits        24606    24606           
- Misses        664      707   +43     
+ Partials       49        6   -43     

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