AdSense Settings footer link takes user to 404 page

[kuasha420]

Bug Description

Identified as part of release testing for #6564 - Clicking on the AdSense settings footer page takes user to the AdSense start page. however this link has been changed from https://www.google.com/adsense/start to https://adsense.google.com/start. While there's a basic redirect in place for the above change in Google site, this only works for the plain URL. Since our link adds query parameter without adding a trailing slash, this doesn't work for us and users get a 404 page.

Steps to reproduce

1. Go to AdSense Settings
2. Click on See full details in AdSense
3. See the link returns 404.

Additional Context

• Plugin Version: 1.94.0

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Acceptance criteria

• AdSense Settings Footer Link should take user to AdSense home page without resulting in a 404 error.
  • This can be accomplished by updating the AdSense modules homepage URL to https://adsense.google.com/start.

Implementation Brief

• In Google\Site_Kit\Modules\AdSense class:
  • Update the homepage with the correct URL from AC in the return array of setup_info function.

Test Coverage

• Fix any potential failing tests/snapshots.

QA Brief

• The AdSense footer link should behave correctly.

Changelog entry

• Update the AdSense homepage URL, fixing the link in the AdSense Settings footer.

[wpdarren]

QA Update: ✅

Verified:

• The AdSense link in the settings no longer 404's. I am redirected to https://adsense.google.com/start/?source=site-kit&url=https:%2F%2F195-0.instawp.xyz&pli=1&authuser=2
• Went through all of the other external links on Site Kit settings to make sure they continue to function.