TASK: Reintroduce content graph / cr read model cache

With neos/neos-development-collection#5246 the cache was naively removed ^^
But with the additional complexity of fetching workspaces etc it makes sense to reintroduce this cache layer.

src/DoctrineDbalContentGraphProjection.php

@@ -66,6 +66,7 @@
 use Neos\ContentRepository\Core\Projection\ContentGraph\Timestamps;
 use Neos\ContentRepository\Core\Projection\ProjectionInterface;
 use Neos\ContentRepository\Core\Projection\ProjectionStatus;
+use Neos\ContentRepository\Core\Projection\WithMarkStaleInterface;
 use Neos\ContentRepository\Core\SharedModel\Node\NodeAggregateClassification;
 use Neos\ContentRepository\Core\SharedModel\Node\NodeAggregateId;
 use Neos\ContentRepository\Core\SharedModel\Node\NodeName;
@@ -78,7 +79,7 @@
  * @implements ProjectionInterface<ContentRepositoryReadModel>
  * @internal but the graph projection is api
  */
-final class DoctrineDbalContentGraphProjection implements ProjectionInterface
+final class DoctrineDbalContentGraphProjection implements ProjectionInterface, WithMarkStaleInterface
 {
     use ContentStream;
     use NodeMove;
@@ -168,6 +169,12 @@ public function reset(): void
 
         $this->checkpointStorage->acquireLock();
         $this->checkpointStorage->updateAndReleaseLock(SequenceNumber::none());
+        $this->getState()->forgetInstances();
+    }
+
+    public function markStale(): void
+    {
+        $this->getState()->forgetInstances();
     }
 
     public function getCheckpointStorage(): DbalCheckpointStorage