Bug Report

I had mglaman/phpstan-drupal already installed and working and now installed palantirnet/drupal-rector as well. When executing vendor/bin/rector I get the following error message:

 [ERROR] "PHPStan\ShouldNotHappenException" thrown in                                                                   
         "/var/www/html/vendor/mglaman/phpstan-drupal/drupal-autoloader.php" on line 7 while loading bootstrap file     
         /var/www/html/vendor/mglaman/phpstan-drupal/drupal-autoloader.php: The autoloader did not receive the          
         container.

By adding some printf() outputs I could break this down to Rector\NodeTypeResolver\DependencyInjection\PHPStanExtensionsConfigResolver::resolve() detecting the drupal-autoloader.php of mglaman/phpstan-drupal. But that fails if the variable $container isn't set correctly, which here is the case.

Minimal PHP Code Causing Issue

No custom PHP code is required to cause this issue, just install the packages in the versions mentioned above.

Expected Behaviour

When resolving the extensions, simply skip mglaman/phpstan-drupal.