Modernize react example code in docs

[carbonrobot]

Convert demos, example code, and gallery code to use Functional React Components instead of Class Components to modernize the examples

Preview for testing: https://victory-git-docs-functional-formidable-labs.vercel.app/open-source/victory/docs

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Latest commit: bb43668

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Name	Status	Preview	Comments	Updated (UTC)
victory	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 14, 2024 6:22pm

[BrittanyIRL]

VIVA TOMATO 🍅

Read through, nice to see the modernized functions. Also clicked around, nothing breaks.