fix: hasChanged() returns wrong result to mapped property

Author: kenjis

system/Entity/Entity.php

@@ -256,6 +256,8 @@ public function hasChanged(?string $key = null): bool
             return $this->original !== $this->attributes;
         }
 
+        $key = $this->mapProperty($key);
+
         // Key doesn't exist in either
         if (! array_key_exists($key, $this->original) && ! array_key_exists($key, $this->attributes)) {
             return false;

tests/system/Entity/EntityTest.php

@@ -929,6 +929,24 @@ public function testHasChangedNoChange()
         $this->assertFalse($entity->hasChanged('default'));
     }
 
+    public function testHasChangedMappedNoChange()
+    {
+        $entity = $this->getEntity();
+
+        $entity->createdAt = null;
+
+        $this->assertFalse($entity->hasChanged('createdAt'));
+    }
+
+    public function testHasChangedMappedChanged()
+    {
+        $entity = $this->getEntity();
+
+        $entity->createdAt = '2022-11-11 11:11:11';
+
+        $this->assertTrue($entity->hasChanged('createdAt'));
+    }
+
     public function testHasChangedWholeEntity()
     {
         $entity = $this->getEntity();