Okay, when I saw the recipe in the Next.js docs with `getLayout`, I was like "psh this API is so confusing, this should just be a component"
anyway now we see why it wasn't a component: the _whole point_ of it was to circumvent the usual React diffing algorithm's belief that two different components _can't_ ever share UI. But here we were, making different `layoutComponent`s that were meant to share UI, lol!
Anyway, if you just _return JSX in a function_, the React diffing algorithm never sees that it came from a different place, so it's generous when diffing them. Neat!
But I still changed the recipe's `getLayout` name to `renderWithLayout`, because it just confused me so much at first lol, I thought it was going to like, return a layout function? This is much clearer verbing to me imo
Okay I actually screwed up the layouts thing a bit! Because right, they need to *share* a LayoutComponent in order to share the UI across the pages. This gets a bit tricky with wanting to change the margin, too. I'll address this with an upcoming refactor!
