MDL-77336 admin: Added class properties that are not declared.

In PHP 8.2 and later, setting a value to an undeclared class property is
deprecated and emits a deprecation notice.
So we need to add missing class properties that still need to be declared.

admin/tool/task/classes/check/adhocqueue.php

@@ -38,6 +38,12 @@ use core\check\result;
  */
 class adhocqueue extends check {
 
+    /** @var string adhocqueue id. */
+    protected string $id = '';
+
+    /** @var string adhocqueue name. */
+    protected string $name = '';
+
     /**
      * Constructor
      */