fix(list): Ensure disabled colors apply to primary and secondary text

[allan-chen]

Project import generated by Copybara.

[googlebot]

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[codecov-io]

Codecov Report

Merging #5322 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##           master   #5322      +/-   ##
=========================================
+ Coverage    98.3%   98.3%   +<.01%     
=========================================
  Files         162     162              
  Lines        6311    6312       +1     
  Branches      866     866              
=========================================
+ Hits         6204    6205       +1     
  Misses        106     106              
  Partials        1       1

Impacted Files	Coverage Δ
testing/helpers/foundation.ts	87.5% <100%> (+0.26%)	⬆️

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[googlebot]

CLAs look good, thanks!

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