chore: Explore React Context approach

[at-susie]

Description

This is an exploration for the tech approach for an accent box for one-theme. 2nd direction.

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 97.57%. Comparing base (2b70f2e) to head (ce81448).
⚠️ Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4657      +/-   ##
==========================================
+ Coverage   97.55%   97.57%   +0.01%     
==========================================
  Files         948      948              
  Lines       30365    30489     +124     
  Branches    11076    11149      +73     
==========================================
+ Hits        29624    29749     +125     
+ Misses        694      693       -1     
  Partials       47       47              

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