fix: declare missing dependencies

[merceyz]

Motivation

#6047 made Docusaurus PnP strict mode compatible but by default PnP still allows some fallbacks, this PR disables that fallback in the e2e test and adds the remaining undeclared dependencies.

Have you read the [Contributing Guidelines on pull requests]

Yes

Test Plan

The e2e test passes

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⚡️ Lighthouse report for the changes in this PR:

Category	Score
🟢 Performance	93
🟢 Accessibility	98
🟢 Best practices	100
🟢 SEO	100
🟢 PWA	95

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[Josh-Cena]

Thanks, do you think it makes more sense to declare react as optional peer deps in @docusaurus/utils, since there's only one function that actually relies on it and it's hardly used?

[merceyz]

It's currently always imported so no, if it was changed to use dynamic imports then sure.

[Josh-Cena]

I see