[ExpressionLanguage] Fix BC of cached SerializedParsedExpression containing GetAttrNode

Author: fancyweb

Node/GetAttrNode.php

@@ -149,4 +149,15 @@ public function toArray()
                 return [$this->nodes['node'], '[', $this->nodes['attribute'], ']'];
         }
     }
+
+    /**
+     * Provides BC with instances serialized before v6.2
+     */
+    public function __unserialize(array $data): void
+    {
+        $this->nodes = $data['nodes'];
+        $this->attributes = $data['attributes'];
+        $this->attributes['is_null_coalesce'] ??= false;
+        $this->attributes['is_short_circuited'] ??= $data["\x00Symfony\Component\ExpressionLanguage\Node\GetAttrNode\x00isShortCircuited"] ?? false;
+    }
 }