[blog] Simplify /base-ui-2024-plans/ page

[oliviertassinari]

No demos in the blog, but I didn't revert:

material-ui/docs/src/modules/components/TopLayoutBlog.js

Line 409 in eec727e

<RichMarkdownElement

because we might need ad-hoc demos for the blog posts in the future. For example: https://github.com/tailwindlabs/tailwindcss.com/blob/1fc859c08b1acb6cf6d5b6a0015d5b85a8b62900/src/pages/blog/tailwindcss-v3-4/index.mdx#L56, https://tailwindcss.com/blog/tailwindcss-v3-4#dynamic-viewport-units. However, for anything that is product-centered, it's not worth having to maintain it, best to have something that works.

Before: https://mui.com/blog/base-ui-2024-plans/#more-thorough-animation-support
Preview: https://deploy-preview-41171--material-ui.netlify.app/blog/base-ui-2024-plans/#more-thorough-animation-support

A follow-up on #40882

[mui-bot]

Netlify deploy preview

https://deploy-preview-41171--material-ui.netlify.app/

Bundle size report

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Generated by 🚫 dangerJS against ec15749

[danilo-leal]

👍 (ugly iframe demo 🤮)

[oliviertassinari]

Definitely, not pretty, slower to load as well.

Keeping stuff like this working at scale https://mantine.dev/changelog/7-5-0/, https://reshaped.so/docs/changelog#2.1.0, it feels like a distraction 😁.