fix: charset for telechat_agenda_content_view

[jennifer-richards]

@flynnliz

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.80%. Comparing base (a04c432) to head (48c801a).
Report is 14 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8967      +/-   ##
==========================================
- Coverage   88.80%   88.80%   -0.01%     
==========================================
  Files         314      314              
  Lines       41419    41421       +2     
==========================================
+ Hits        36782    36783       +1     
- Misses       4637     4638       +1     

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