fix(router-core): reset statusCode to 200 on navigation start

[hyungwookchoi]

fix #4663

The problem appears to be that statusCode isn't reset to 200 at the beginning of navigation, causing 404 to persist across subsequent navigations.

[nx-cloud]

View your CI Pipeline Execution ↗ for commit 1ee1d92

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☁️ Nx Cloud last updated this comment at 2025-07-17 00:46:44 UTC

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commit: 1ee1d92

[schiller-manuel]

thanks for starting this.
i don't think we need an e2e test for this, at least not for router.
this should be testable in a unit test.
also, can you please add a test like that:

1. start with /
2. go to a /non-existing-route (=404)
3. go to /existing-route (200)
4. go to /another-non-existing-route (=404)

[hyungwookchoi]

removed the e2e tests and added unit tests for the statusCode reset behavior.

[schiller-manuel]

very nice, thanks a lot!