test(chat-button-toggle-skeleton): increase coverage

[ariellalgilmore]

Closes #17431 #17432 #17429

Add test coverage for Chat Button, Chat Button Skeleton, and Toggle Skeleton

Changelog

New

• added tests for Chat Button
• added tests for Chat Button Skeleton
• added Toggle Skeleton and created a tests folder inside Toggle

Testing / Reviewing

confirm testing passes
codecov should be 100% for these files

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.98%. Comparing base (fdb31d9) to head (9e12e6c).
Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #17440      +/-   ##
==========================================
+ Coverage   76.82%   76.98%   +0.15%     
==========================================
  Files         408      408              
  Lines       13973    13973              
  Branches     4341     4288      -53     
==========================================
+ Hits        10735    10757      +22     
+ Misses       3064     3043      -21     
+ Partials      174      173       -1     

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[emyarod]

looks good to me!