Fixed issues that PHPStan spotted

Author: tarlepp

src/Entity/Traits/LogRequestProcessRequestTrait.php

@@ -30,7 +30,7 @@
  * @package App\Entity\Traits
  * @author TLe, Tarmo Leppänen <tarmo.leppanen@pinja.com>
  *
- * @method array getSensitiveProperties();
+ * @method array<int, string> getSensitiveProperties();
  */
 trait LogRequestProcessRequestTrait
 {

src/Security/SecurityUser.php

@@ -21,7 +21,7 @@
 class SecurityUser implements UserInterface, PasswordAuthenticatedUserInterface
 {
     private readonly string $identifier;
-    private readonly string | null $password;
+    private readonly string $password;
     private readonly Language $language;
     private readonly Locale $locale;
     private readonly string $timezone;