chore(deps): update dependency svelte to v5.19.8 (#1218)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [svelte](https://svelte.dev)
([source](https://redirect.github.com/sveltejs/svelte/tree/HEAD/packages/svelte))
| [`5.19.7` ->
`5.19.8`](https://renovatebot.com/diffs/npm/svelte/5.19.7/5.19.8) |
[![age](https://developer.mend.io/api/mc/badges/age/npm/svelte/5.19.8?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/svelte/5.19.8?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/svelte/5.19.7/5.19.8?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/svelte/5.19.7/5.19.8?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>sveltejs/svelte (svelte)</summary>

###
[`v5.19.8`](https://redirect.github.com/sveltejs/svelte/blob/HEAD/packages/svelte/CHANGELOG.md#5198)

[Compare
Source](https://redirect.github.com/sveltejs/svelte/compare/[email protected]@5.19.8)

##### Patch Changes

- fix: properly set `value` property of custom elements
([#&#8203;15206](https://redirect.github.com/sveltejs/svelte/pull/15206))

- fix: ensure custom element updates don't run in hydration mode
([#&#8203;15217](https://redirect.github.com/sveltejs/svelte/pull/15217))

- fix: ensure tracking returns true, even if in unowned
([#&#8203;15214](https://redirect.github.com/sveltejs/svelte/pull/15214))

</details>

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