docs: more Svelte 5 conversion

[dummdidumm]

closes sveltejs/svelte.dev#549

fixes some leftovers, adds a few callouts to legacy syntax

[changeset-bot]

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Latest commit: 6e7b30f

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[SymphonySimper]

sveltejs/svelte.dev#549 (comment)

Couple of sections still seems to use <slot></slot> | <slot /> instead of {@render children()}.

https://svelte.dev/docs/kit/routing
https://svelte.dev/docs/kit/load#Layout-data
https://svelte.dev/docs/kit/advanced-routing

Can this be addressed as well?

[eltigerchino]

sveltejs/svelte.dev#549 (comment)

Couple of sections still seems to use <slot></slot> | <slot /> instead of {@render children()}.
svelte.dev/docs/kit/routing
svelte.dev/docs/kit/load#Layout-data
svelte.dev/docs/kit/advanced-routing

Can this be addressed as well?

Yes, these also contain export let data. Good find.

[SymphonySimper]

Yes, these also contain export let data. Good find.

Thanks! All most all of the export let data has been fixed. The only one I could find is at 90-adapter-vercel.md.

[SymphonySimper]

kit/documentation/docs/20-core-concepts/20-load.md

Line 127 in b12876b

let next = $derived(data.posts[index - 1];)+++

Shouldn't this be index + 1 for next? And the ; should be outside of the brackets.
Suggested Change:

- let next = $derived(data.posts[index - 1];)+++
+ let next = $derived(data.posts[index + 1]);+++

[eltigerchino]

This PR fixes the lint error for src/exports/vite/public.d.ts too.