refactor: Update Server model getContainers method to use collect() for containers and containerReplicates

Author: andrasbacsai

app/Models/Server.php

@@ -715,8 +715,8 @@ public function getContainers()
         }
 
         return [
-            'containers' => $containers ?? collect([]),
-            'containerReplicates' => $containerReplicates ?? collect([]),
+            'containers' => collect($containers) ?? collect([]),
+            'containerReplicates' => collect($containerReplicates) ?? collect([]),
         ];
     }