BUGFIX: Prevent premature connection to database before PersistenceManager::persistAllowedObjects

For every simple GET request `persistAllowedObjects` is called via the Package.php in flow.
This results in building a db connection, even if there is nothing to do.

So if neither the persistentManger nor the entityManager has been created by the object manager instantiating one and thus the other which leads to "work".

For the check if the `entityManager` `isOpen` we activate the lazy dependency.

Now in this retrieval process - even though doctrines connection is lazy itself - the connection will be made forcefully
see `\Neos\Flow\Persistence\Doctrine\EntityManagerFactory::create` line 120 (https://github.com/neos/flow-development-collection/blob/11e2348125dd8286ff9ccc088e5d187dc9143bf5/Neos.Flow/Classes/Persistence/Doctrine/EntityManagerFactory.php#L120) or https://github.com/neos/flow-development-collection/blob/d93b6b09ca2071c87812a9ef4bc120201c44608a/Neos.Flow/Classes/Persistence/Doctrine/EntityManagerConfiguration.php#L229

This is ironic because if there is no connection - or no entity manager and persistence manager in the first place, the current process cannot have made any changes to the transaction.

Reason for this is that the Package.php has a wrong check which looks for if the PersistenceManager _exists_ as php class at all rather than if we have an active instance loaded.
This is an old regression from: 163e204

Author: mhsdesign

Neos.Flow/Classes/Package.php

@@ -71,10 +71,11 @@ public function boot(Core\Bootstrap $bootstrap)
         $dispatcher = $bootstrap->getSignalSlotDispatcher();
 
         $dispatcher->connect(Mvc\Dispatcher::class, 'afterControllerInvocation', function ($request) use ($bootstrap) {
-            // No auto-persistence if there is no PersistenceManager registered
+            // No auto-persistence if there is no PersistenceManager loaded
             // This signal will not be fired at compile time, as it's only emitted for web requests which happen at runtime.
             if (
-                $bootstrap->getObjectManager()->has(Persistence\PersistenceManagerInterface::class)
+                /** @phpstan-ignore-next-line the object manager interface doesn't specify this method */
+                $bootstrap->getObjectManager()->hasInstance(Persistence\PersistenceManagerInterface::class)
             ) {
                 if (SecurityHelper::hasSafeMethod($request->getHttpRequest()) !== true) {
                     $bootstrap->getObjectManager()->get(Persistence\PersistenceManagerInterface::class)->persistAll();
@@ -86,9 +87,10 @@ public function boot(Core\Bootstrap $bootstrap)
         });
 
         $dispatcher->connect(Cli\Dispatcher::class, 'afterControllerInvocation', function () use ($bootstrap) {
-            // No auto-persistence if there is no PersistenceManager registered or during compile time
+            // No auto-persistence if there is no PersistenceManager loaded or during compile time
             if (
-                $bootstrap->getObjectManager()->has(Persistence\PersistenceManagerInterface::class)
+                /** @phpstan-ignore-next-line the object manager interface doesn't specify this method */
+                $bootstrap->getObjectManager()->hasInstance(Persistence\PersistenceManagerInterface::class)
                 && !($bootstrap->getObjectManager() instanceof CompileTimeObjectManager)
             ) {
                 $bootstrap->getObjectManager()->get(Persistence\PersistenceManagerInterface::class)->persistAll();