Fixed the broken build. Restored the $data string instead of pushing a fixed array into the constructor of the Property class.

Author: dverkade

lib/internal/Magento/Framework/Validator/Builder.php

@@ -258,7 +258,7 @@ protected function _createConstraint(array $data)
             $result = new \Magento\Framework\Validator\Constraint\Property(
                 $validator,
                 $data['property'],
-                ['alias']
+                $data['alias']
             );
         } else {
             $result = $this->_constraintFactory->create(['validator' => $validator, 'alias' => $data['alias']]);