fix: ignore text and expressions outside the template when validating HTML

[dummdidumm]

fixes #14466

The logic introduced in #14395 was flawed - not every text or expression outside the template is the child of an attribute. This turns it around: We know that every child of a fragment is inside the template, so we ignore all text/expression tags that are not child of a fragment

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🦋 Changeset detected

Latest commit: e557144

The changes in this PR will be included in the next version bump.

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pnpm add https://pkg.pr.new/svelte@14468