Deprecate passing $root to \Drupal\Core\Database\Database::convertDbUrlToConnectionInfo()

Changes made

Looks good to me, tagging for change record updates as it does make sense to merge this with the other one - let's do that on commit.

The Needs Review Queue Bot → tested this issue. It fails the Drupal core commit checks. Therefore, this issue status is now "Needs work".

This does not mean that the patch necessarily needs to be re-rolled or the MR rebased. Read the Issue Summary, the issue tags and the latest discussion here to determine what needs to be done.

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The bot is wrong.

Actually no, something has changed in PHPStan, I get the same locally

  Line   lib/Drupal/Core/Test/TestSetupTrait.php (in context of                                           
         class@anonymous/tests/Drupal/Tests/Core/Test/TestSetupTraitTest.php:39)                          
 ------ ------------------------------------------------------------------------------------------------- 
  137    Method                                                                                           
         class@anonymous/tests/Drupal/Tests/Core/Test/TestSetupTraitTest.php:39::prepareDatabasePrefix()  
         has no return type specified.                                                                    
         🪪  missingType.return                                                                           
  146    Method                                                                                           
         class@anonymous/tests/Drupal/Tests/Core/Test/TestSetupTraitTest.php:39::changeDatabasePrefix()   
         has no return type specified.                                                                    
         🪪  missingType.return         

Looks like bot and your local have an old baseline version? I added the return type and the core CI job tells me to remove the above from the baseline

https://git.drupalcode.org/issue/drupal-3522513/-/pipelines/490932

Seems phpstan is still failing.