Sveltekit: Update translation outside of component

[LuMiSxh]

Is your feature request related to a problem? Please describe.
A problem I encountered was changing the locale in SvelteKit and only the component the change happnes in updating its translation,

Describe the solution you'd like
In the SvelteKit docs for this library an extra section showing how to update all translations when changing the locale inside a component.

Additional context
I already found a solution for it and have an Idea for implementing it,
Inside the root layout file you just have to wrap your <slot/> inside a svelte key with the $locale as its value.
Everything inside the key-block will re-render once the locale changed.
It would look like so:

<scrip>
    import {locale} from "svelte-i18n";
</script>

{#key $locale}
    <slot/>
{/key}