test: wait for beforeNavigate redirect state

[svelte-triage-bot]

Fixes a pre-existing Playwright synchronization race found while investigating sveltejs/kit#16880 and its failed workflow run.

page.waitForLoadState('networkidle') could return immediately because network idle had already been reached before the client-side redirect navigation. The following raw DOM read could then observe stale state. Replace it with a web-first toHaveText assertion that waits for the expected navigation callback state.

Verification included 100 repetitions with four workers, the complete client spec, the original 4-worker shard, and server/client route-resolution variants. This is test-only, so no changeset is included.

[pkg-svelte-dev]

Install the latest version of @sveltejs/kit from 37b3bed:

pnpm add https://pkg.svelte.dev/@sveltejs/kit/c/37b3bedda76681d1e0be7e65e1cc10a4dc3f8e34

Open in pkg.svelte.dev: https://pkg.svelte.dev/repos/kit/pr/16891

Note

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

[changeset-bot]

⚠️ No Changeset found

Latest commit: 37b3bed

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