downgrade to kirby v3

kirby/src/Panel/Site.php

@@ -2,10 +2,6 @@
 
 namespace Kirby\Panel;
 
-use Kirby\Cms\File as CmsFile;
-use Kirby\Cms\ModelWithContent;
-use Kirby\Filesystem\Asset;
-
 /**
  * Provides information about the site model for the Panel
  * @since 3.6.0
@@ -21,12 +17,14 @@ class Site extends Model
 	/**
 	 * @var \Kirby\Cms\Site
 	 */
-	protected ModelWithContent $model;
+	protected $model;
 
 	/**
 	 * Returns the setup for a dropdown option
 	 * which is used in the changes dropdown
 	 * for example.
+	 *
+	 * @return array
 	 */
 	public function dropdownOption(): array
 	{
@@ -40,16 +38,22 @@ class Site extends Model
 	 * Returns the image file object based on provided query
 	 *
 	 * @internal
+	 * @param string|null $query
+	 * @return \Kirby\Cms\File|\Kirby\Filesystem\Asset|null
 	 */
-	protected function imageSource(
-		string|null $query = null
-	): CmsFile|Asset|null {
-		$query ??= 'site.image';
+	protected function imageSource(string $query = null)
+	{
+		if ($query === null) {
+			$query = 'site.image';
+		}
+
 		return parent::imageSource($query);
 	}
 
 	/**
 	 * Returns the full path without leading slash
+	 *
+	 * @return string
 	 */
 	public function path(): string
 	{
@@ -61,6 +65,8 @@ class Site extends Model
 	 * view's component props
 	 *
 	 * @internal
+	 *
+	 * @return array
 	 */
 	public function props(): array
 	{
@@ -80,6 +86,8 @@ class Site extends Model
 	 * this model's Panel view
 	 *
 	 * @internal
+	 *
+	 * @return array
 	 */
 	public function view(): array
 	{