fix(qwik-router): preserve params for ancestor layout loaders

[ixcans]

Summary

• capture the params matched at each route loader's canonical path
• provide those params to pathname-scoped strict loader request events
• preserve existing loader URL, pathname, and search scoping behavior

Motivation

This is a narrow follow-up to #8944. Strict loaders intentionally scope an ancestor loader's request event to that loader's own path, but the scoped event currently replaces params with an empty object even when that path resolved dynamic parameters.

For example, a loader declared at /[tenantSlug]/ while rendering /acme/agents/ should keep its canonical /acme/ URL and receive { tenantSlug: 'acme' }. Parameters introduced below the loader's path remain excluded.

Security

This preserves the cache-isolation behavior from #8856. Params come only from the route-trie snapshot captured at the same canonical loader path, and a missing snapshot fails closed to {}. Search-only scoped events retain their existing empty params behavior.

Testing

• pnpm fmt
• pnpm tsc.check
• pnpm api.update
• env -u RUSTUP_TOOLCHAIN pnpm build.core
• pnpm vitest run packages/qwik-router (65 files, 635 tests)
• linked production build of the [🐞] beta.40: ancestor layout's routeLoader$ gets empty params + truncated request.url when resolving a route nested under it #8944 repro: /x/sub/ renders both loader values as "x"; the ancestor event remains scoped to /x/ and receives { "slug": "x" }

pnpm test.unit also completed 3,235 tests successfully; seven unrelated Qwik Vite plugin tests failed locally because their source-mode optimizer resolved a missing generated binding at /qwik-vite/src/bindings/qwik.wasm.mjs.

Changeset

• patch @qwik.dev/router

[changeset-bot]

🦋 Changeset detected

Latest commit: f173334

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

This PR includes changesets to release 6 packages

Name	Type
@qwik.dev/router	Patch
eslint-plugin-qwik	Patch
@qwik.dev/core	Patch
create-qwik	Patch
@qwik.dev/react	Patch
@qwik.dev/utils	Patch

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