Fix sidebar highlighting when path contains non-ASCII characters

[Genteure]

What kind of changes does this PR include?

• Changes to Starlight code

Description

currentPathname comes from Astro.url in index.astro, which is

A full URL object of the request URL. Equivalent to: new URL(Astro.request.url)

• Closes Sidebar highlighting and navigation buttons not working in pages with non-ascii in path #1067

Before	After

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Latest commit: ba6e87b

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

This PR includes changesets to release 1 package

Name	Type
@astrojs/starlight	Patch

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Name	Status	Preview	Updated (UTC)
starlight	✅ Ready (Inspect)	Visit Preview	Nov 16, 2023 11:43pm

[kevinzunigacuellar]

Perhaps we can re-use a test suite. I was looking around and I think it could be a good fit for basics/navigation -> getSidebar(). What do you think?

starlight/packages/starlight/__tests__/basics/navigation.test.ts

Line 16 in 60edb22

describe('getSidebar', () => {

[delucis]

Thanks for the fix @Genteure!