style(archiving): Boolean getters can also be used as isXXX and not just getXXX

Co-authored-by: Christoph Wurst <1374172+ChristophWurst@users.noreply.github.com>
Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

Author: AndyScherzinger

lib/Db/UserArchive.php

@@ -15,6 +15,7 @@
  * @method getNodeId(): int
  * @method setNodeId(int $value): void
  * @method setArchived(bool $value): void
+ * @method isArchived(): bool
  */
 class UserArchive extends EntitySuper {
 	protected ?string $userId = null;
@@ -28,8 +29,4 @@ public function __construct() {
 		$this->addType('node_id', 'integer');
 		$this->addType('archived', 'boolean');
 	}
-
-	public function isArchived(): bool {
-		return $this->archived;
-	}
 }