[TASK] Set public visibility for FrontendSimulation services

- Update Services.yaml to set `public: true` for `FrontendSimulation`.

Author: froemken

Configuration/Services.yaml

@@ -32,6 +32,7 @@ services:
     resource: '../Classes/FrontendSimulation/*'
     autowire: true
     autoconfigure: true
+    public: true
 
   facets:
     namespace: ApacheSolrForTypo3\Solr\Domain\Search\ResultSet\Facets\