fix: SA: Fix "might not be defined" rule.

SA stands for Static Analysis.

src/Bundle/ChillPersonBundle/Service/Import/SocialWorkMetadata.php

@@ -274,6 +274,8 @@ final class SocialWorkMetadata implements SocialWorkMetadataInterface
                 $jsonCriterias
             );
 
+        $entity = null;
+
         switch (true) {
             case count($results) === 0:
                 $entity = $repository->getClassName();
@@ -291,6 +293,10 @@ final class SocialWorkMetadata implements SocialWorkMetadataInterface
                 );
         }
 
+        if (null === $entity) {
+            throw new Exception('Unable to create entity.');
+        }
+
         return $entity;
     }