fix: add top level snippets to instance scope

[dummdidumm]

fixes #9460

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🦋 Changeset detected

Latest commit: be4e594

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Name	Status	Preview	Comments	Updated (UTC)
svelte-5-preview	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 16, 2023 11:59am

[trueadm]

Nice implementation.