Fix propel datacollector

Fix error in profiler on the Propel panel

```
An exception has been thrown during the rendering of a template
("Propel\Bundle\PropelBundle\DataCollector\PropelDataCollector::getQueries(): Return value
must be of type array, Symfony\Component\VarDumper\Cloner\Data returned").
```

Related to adding hint type to the medthod in the commit
58fa12e#diff-53d4d12dd850e3a771f9af985f2fea723cbbaee3f0d3509da76ab67404a0c05b

DataCollector/PropelDataCollector.php

@@ -58,7 +58,7 @@ public function getName(): string
      */
     public function getQueries(): array
     {
-        return $this->data['queries'];
+        return iterator_to_array($this->data['queries'], false);
     }
 
     /**