fix: never consider inert boundary effects

[paoloricciuti]

Closes #14994

Thanks to @trueadm for the guidance (he actually solved the bug in #14998 ...we then talked a bit and since this seemed a better alternative we switched to this).

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🦋 Changeset detected

Latest commit: fec2c20

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[Rich-Harris]

preview: https://svelte-dev-git-preview-svelte-14999-svelte.vercel.app/

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[github-actions]

Playground

pnpm add https://pkg.pr.new/svelte@14999