Add support for Svelte 5

[SeppahBaws]

This PR brings Svelte 5 support out of preview mode and will cause some big version bumps:

• houdini: v1.3.0
• houdini-svelte: v2.0.0

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 26406289c54abad7d2f202a9b549c19f111df3af

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

This PR includes changesets to release 8 packages

| Name | Type | | ----------------------------------- | ----- | | houdini-plugin-svelte-global-stores | Minor | | houdini-svelte | Major | | houdini | Minor | | houdini-adapter-auto | Patch | | houdini-adapter-cloudflare | Patch | | houdini-adapter-node | Patch | | houdini-adapter-static | Patch | | houdini-react | Patch |

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