fix: preserve transport errors from remote queries

[svelte-triage-bot]

• Remote queries passed every client failure through handleError and rethrew HandledHttpError, so an offline fetch incorrectly appeared to be an HTTP 500.
• #16245 introduced the normalized reactive .error contract and #16664 finalized handled HTTP failures; this keeps that contract while separating the imperative rejection.
• Preserve original non-HTTP rejections, retain finalized HTTP errors, and track the rejection for superseded awaiters. An exported NetworkError was rejected because native fetch errors are already distinguishable with isHttpError, without defining a new cross-resource API.
• The shared Query path covers ordinary and batched queries, including overlapping requests, while leaving reactive .error, live-query retries, prerender resources, forms, and commands unchanged.

Fixes #17268

[pkg-svelte-dev]

Install the latest version of @sveltejs/kit from 0b607f6:

pnpm add https://pkg.svelte.dev/@sveltejs/kit/c/0b607f6cd764f2235c5c5db3d8835f76fbfb571d

Open in pkg.svelte.dev: https://pkg.svelte.dev/repos/kit/pr/17269

Note

This PR is from a fork. A maintainer must approve approve each commit before it can be built and installed.

[changeset-bot]

🦋 Changeset detected

Latest commit: 0b607f6

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

This PR includes changesets to release 1 package

Name	Type
@sveltejs/kit	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR