[Content]: All code examples have erros

[cebulon]

📚 Subject area/topic

/concepts/context.mdx

📋 Page(s) affected (or suggested, for new content)

https://docs.solidjs.com/concepts/context

📋 Description of content that is out-of-date or incorrect

The code examples are inconsistent.
Most (except one or two) will not work like provided on the page.
They lack initialisation lines, are copies of the example above and therefore not working, or have other issues.

There is not one example on the page that explains or shows all the code needed to run contexts.

🖥️ Reproduction in StackBlitz (if reporting incorrect content or code samples)

No response