Update SettingsConfig.php

Author: rubenvanassche

src/SettingsConfig.php

@@ -17,7 +17,7 @@ class SettingsConfig
     private string $settingsClass;
 
     /** @var array<string> */
-    private array $defaultValueLoadedProperties;
+    private array $defaultValueLoadedProperties = [];
 
     /** @var Collection<string, ?\Spatie\LaravelSettings\SettingsCasts\SettingsCast> */
     private Collection $casts;