[BUGFIX] Ensure to allow DI for DatabaseRowService

Author: bmack

Configuration/Services.yaml

@@ -8,6 +8,8 @@ services:
     resource: '../Classes/*'
   B13\Backendpreviews\Hooks\BackendPreviewRenderer:
     public: true
+  B13\Backendpreviews\Service\DatabaseRowService:
+    public: true
   B13\Backendpreviews\Listener\PageContentPreviewRendering:
     tags:
       - name: event.listener