Merge pull request #7544 from kenjis/fix-Entity-return-4.4

refactor: [Entity] fix incorrect return value

system/Entity/Entity.php

@@ -465,7 +465,7 @@ public function __set(string $key, $value = null)
         if (method_exists($this, '_' . $method)) {
             $this->{'_' . $method}($value);
 
-            return $this;
+            return;
         }
 
         // If a "`set` + $key" method exists, it is also a setter.