TASK: Use correct @template-covariant tag for ProjectionFactoryInterface

See https://phpstan.org/blog/whats-up-with-template-covariant

Solves that

$projectionsFactory = new ProjectionsAndCatchUpHooksFactory();
$projectionsFactory->registerFactory(new DoctrineDbalContentGraphProjectionFactory($this->dbalClient), []);

yields when being used stand alone:

  172    Parameter #1 $factory of method Neos\ContentRepository\Core\Factory\ProjectionsAndCatchUpHooksFactory::registerFactory() expects                                                                                                                                                            
         Neos\ContentRepository\Core\Projection\ProjectionFactoryInterface<Neos\ContentRepository\Core\Projection\ProjectionInterface<Neos\ContentRepository\Core\Projection\ProjectionStateInterface>>, Neos\ContentGraph\DoctrineDbalAdapter\DoctrineDbalContentGraphProjectionFactory given.      
         💡 Template type T on class Neos\ContentRepository\Core\Projection\ProjectionFactoryInterface is not covariant. Learn more: https://phpstan.org/blog/whats-up-with-template-covariant                                                                                                       
         ✏️  file:///Users/marchenryschultz/Code/lab/standalone-content-repository/src/StandaloneContentRepositoryRegistry.php:172

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Checklist

[ ] Code follows the PSR-2 coding style
[ ] Tests have been created, run and adjusted as needed
[ ] The PR is created against the lowest maintained branch
[ ] Reviewer - PR Title is brief but complete and starts with FEATURE|TASK|BUGFIX
[ ] Reviewer - The first section explains the change briefly for change-logs
[ ] Reviewer - Breaking Changes are marked with !!! and have upgrade-instructions

neos / neos-development-collection

TASK: Use correct @template-covariant tag for ProjectionFactoryInterface #5099