fix(storybook): update Percy config, add plex CDN as an allowed hostname

[tay1orjones]

I've been noticing that we've been having some churn on our Percy status checks since #17308. I believe this config update should ensure that plex always loads from the CDN and we'll stop seeing snapshots using non-plex fonts.

Changelog

New

• add akamai cdn as an allowed hostname in percy config

Testing / Reviewing

• Review the percy status check, there may be some snapshot updates needed but they should all be using Plex and not another font

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[tay1orjones]

• https://www.browserstack.com/docs/percy/stabilize-screenshots/fonts
• https://www.browserstack.com/docs/percy/common-issue/assets-accessible-locally

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.78%. Comparing base (aa67ac9) to head (11547cc).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #18007   +/-   ##
=======================================
  Coverage   81.78%   81.78%           
=======================================
  Files         406      406           
  Lines       14048    14048           
  Branches     4356     4409   +53     
=======================================
  Hits        11489    11489           
+ Misses       2397     2396    -1     
- Partials      162      163    +1     

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[alisonjoseph]

🫶 Thank you for this! Percy has been super annoying

[emyarod]

looks good to me!