refactor: simplify preview generation

Signed-off-by: Sebastian Krupinski <krupinski01@gmail.com>

lib/Manager.php

@@ -6,7 +6,7 @@ namespace KTXM\DocumentsManager;
 
 use InvalidArgumentException;
 use RuntimeException;
-use KTXC\Preview\CachedPreview;
+use KTXC\Preview\Preview;
 use KTXC\Preview\PreviewManager;
 use KTXC\Resource\ProviderManager;
 use KTXF\Documents\Collection\CollectionBaseInterface;
@@ -1351,7 +1351,7 @@ class Manager {
     /**
      * Resolve an authorized entity and lazily generate or retrieve its preview.
      */
-    public function entityPreview(string $tenantId, string $userId, EntityIdentifier $target, string $variant = 'popover'): ?CachedPreview {
+    public function entityPreview(string $tenantId, string $userId, EntityIdentifier $target, string $variant = 'popover'): ?Preview {
         $entities = $this->entityFetchBulk($tenantId, $userId, $target);
         $entity = $entities[$target->entity()] ?? reset($entities);
         if (!$entity instanceof EntityBaseInterface) {