Kitty Giraudel

Ported over from https://github.com/hidde/portable-text-a11y-validation/blob/main/schemas/validation-rules/noFakeHeadings.ts.

In case the title is very short or [absent](https://mathiasbynens.be/notes/minimal-html), you still want to hit the 1024 characters limit in the ``. This pull request intends to make sure it always...

Hi, I was pretty sure there was an open issue for that but I could not find it again so here I am. `` elements with a `number` or `checkbox`...

Cheers. :)