refactor: decouple controller instantiation from changing spokenText.

[morganney]

• Adds a spokenText setter to the controller.
• Removes spokenText from the useEffect dependencies that control instantiation of the backing controller, so new controllers aren't created when the spokenText changes from being marked.

[codecov-commenter]

Codecov Report

Merging #24 (237a143) into main (ec1f788) will increase coverage by 0.03%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #24      +/-   ##
==========================================
+ Coverage   97.33%   97.36%   +0.03%     
==========================================
  Files           7        7              
  Lines         488      494       +6     
  Branches      134      135       +1     
==========================================
+ Hits          475      481       +6     
  Misses         13       13              

Impacted Files	Coverage Δ
src/controller.ts	98.10% <100.00%> (+0.03%)	:arrow_up:
src/hook.tsx	94.94% <100.00%> (+0.05%)	:arrow_up:

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.