PSI module - See full details link enhancement #10870

Feature Description

For Page Speed Insights module, clicking the 'See full details' in the settings PSI module, it goes to the PSI site.
Maybe we could enhance the URL so that when we get to the page, it's already analyzing the site, similar to the SK dashboard link.

Video is attached for reference:

Do not alter or remove anything below. The following sections will be managed by moderators only.

Acceptance criteria

• Clicking the "See full details" link in Site Kit Settings for PageSpeed should include the site's URL in the URL (so it's pre-filled when opening the PageSpeed site).
  • This should mirror the behaviour on the Site Kit dashboard.

Implementation Brief

• Add a getDetailsLinkURL selector to the PageSpeed module's datastore that uses getServiceURL and returns that value, so the site's URL (and utm property) are included in the URL

Test Coverage

• Add a test to ensure the getDetailsLinkURL returns the correct value for PageSpeed.

QA Brief

1. Go to Site Kit > Settings > Connected Services and expand PageSpeed Insights.
2. Verify the See full details in PageSpeed Insights link includes the current site URL and utm_source=sitekit.
3. Open the link and verify PageSpeed Insights loads with the site URL pre-filled.

Changelog entry

• Include site URL from PageSpeed Insights links.