fix: Fixes theming optimisation bug

[pan-kot]

This reverts the optimisation from #163 that merged rules like .awsui-visual-refresh .awsui-context-top-navigation and .awsui-visual-refresh.awsui-context-top-navigation due to a discovered bug where certain tokens were missing. I will look into ways to preserve the optimisation but ensure all tokens are preserved, but doing the safest fix for now.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.57%. Comparing base (bc65c82) to head (5e20084).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #170   +/-   ##
=======================================
  Coverage   97.57%   97.57%           
=======================================
  Files          48       48           
  Lines        2637     2641    +4     
  Branches      545      545           
=======================================
+ Hits         2573     2577    +4     
  Misses         64       64           

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