Adding native type.

src/Form/SettingsForm.php

@@ -18,7 +18,7 @@ class SettingsForm extends ConfigFormBase {
    *
    * @var \Drupal\Core\Config\TypedConfigManagerInterface
    */
-  protected $typedConfigManager;
+  protected TypedConfigManagerInterface $typedConfigManager;
 
   /**
    * SettingsForm constructor.