`Error: navigation was cancelled` thrown in console when using `navigation.cancel()` in `beforeNavigate`

[MathiasWP]

Describe the bug

Sveltekit throws an error when using navigation.cancel() in beforeNavigate:

<script>
    import { beforeNavigate } from '$app/navigation';

    beforeNavigate((navigation) => {
   		// this throws an error
        navigation.cancel();
    })
</script>

<a href="/other">Cancel navigation</a>

Not sure if this is expected behaviour, but the error is caught by our Sentry logging, which is kind of annoying when it's not really an error.

Reproduction

https://github.com/MathiasWP/sveltekit-navigation-cancel-repro

Logs

client.js?v=2cc7adfe:927 Uncaught (in promise) Error: navigation was cancelled
    at Object.cancel (client.js?v=2cc7adfe:927:16)
    at +page.svelte:5:20
    at client.js?v=2cc7adfe:933:46
    at Array.forEach (<anonymous>)
    at before_navigate (client.js?v=2cc7adfe:933:30)
    at navigate (client.js?v=2cc7adfe:969:15)
    at HTMLHtmlElement.<anonymous> (client.js?v=2cc7adfe:1594:5)

### System Info

```Shell
System:
    OS: macOS 13.5.1
    CPU: (8) arm64 Apple M1 Pro
    Memory: 53.38 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 18.9.0 - /usr/local/bin/node
    npm: 9.1.1 - /usr/local/bin/npm
  Browsers:
    Brave Browser: 116.1.57.53
    Chrome: 116.0.5845.140
    Firefox: 112.0.2
    Safari: 16.6
  npmPackages:
    @sveltejs/adapter-auto: ^2.0.0 => 2.1.0 
    @sveltejs/kit: ^1.20.4 => 1.24.0 
    svelte: ^4.0.5 => 4.2.0 
    vite: ^4.4.2 => 4.4.9

Severity

annoyance

Additional Information

Most likely caused by this PR: #9605