fix: repair invalid raw html content during hydration

[dummdidumm]

When the HTML that is coming from raw html is invalid, the browser reshuffles things. Bail in that case to try to repair more often. Should help with withastro/astro#7557

Before submitting the PR, please make sure you do the following

• It's really useful if your PR references an issue where it is discussed ahead of time. In many cases, features are absent for a reason. For large changes, please create an RFC: https://github.com/sveltejs/rfcs
• Prefix your PR title with feat:, fix:, chore:, or docs:.
• This message body should clearly illustrate what problems it solves.
• Ideally, include a test that fails without this PR but passes with it.

Tests and linting

• Run the tests with pnpm test and lint the project with pnpm lint