valid-prop-names-in-kit-pages false positive when exporting trailingSlash variable

[DetachHead]

Before You File a Bug Report Please Confirm You Have Done The Following...

• I have tried restarting my IDE and the issue persists.
• I have updated to the latest version of the packages.

What version of ESLint are you using?

8.28.0

What version of eslint-plugin-svelte are you using?

2.14.0

What did you do?

Configuration

module.exports = {
    rules: {
        'svelte/valid-prop-names-in-kit-pages': 'error'
    }
}

<!-- +page.svelte -->
<script lang="ts">
    export const trailingSlash = 'always'
</script>

What did you expect to happen?

no error, as trailingSlash is valid to export on sveltekit page components. see sveltejs/kit#7719

What actually happened?

> eslint .


C:\projects\project\src\routes\+page.svelte
  10:18  error  disallow props other than data or errors in Svelte Kit page components  svelte/valid-prop-names-in-kit-pages

Link to GitHub Repo with Minimal Reproducible Example

cant be bothered but i'm gonna make a PR fixing it myself anyway

Additional comments

No response

[DetachHead]

nvm i misread the docs, it's only valid in +layout.ts, not .svelte files