fix: unlist the decomposition cheatsheet temporarily

[illright]

Background

People were treating a cheatsheet like a mantra, and due to a very succinct nature of the cheatsheet, it's hard to give an accurate description of what each layer is for. I think we should remove the cheatsheet for now to prevent people getting confused, and then, after a new tutorial, revise it and publish it again

Changelog

1. Unlist the cheatsheet temporarily (it is still accessible with a direct link, but no longer present in the sidebar)
2. Remove fixed height on Docusaurus-generated images because they would stretch in an unnatural way
3. Upgrade dependencies because I can and care

[netlify[bot]]

✅ Deploy Preview for pr-fsd ready!

Name	Link
🔨 Latest commit	9838f8f772b809b5091dfff6933b917d8528389a
🔍 Latest deploy log	https://app.netlify.com/sites/pr-fsd/deploys/65a06c6457b5430008b75223
😎 Deploy Preview	https://deploy-preview-649--pr-fsd.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.