update kirby to v5 and add refresh cache panel view button

public/kirby/src/Field/FieldOptions.php

@@ -2,7 +2,6 @@
 
 namespace Kirby\Field;
 
-use Kirby\Blueprint\Node;
 use Kirby\Cms\ModelWithContent;
 use Kirby\Option\Options;
 use Kirby\Option\OptionsApi;
@@ -18,14 +17,14 @@ use Kirby\Option\OptionsQuery;
  * @copyright Bastian Allgeier
  * @license   https://opensource.org/licenses/MIT
  */
-class FieldOptions extends Node
+class FieldOptions
 {
 	public function __construct(
 		/**
 		 * The option source, either a fixed collection or
 		 * a dynamic provider
 		 */
-		public Options|OptionsProvider|null $options = null,
+		public Options|OptionsProvider $options = new Options(),
 
 		/**
 		 * Whether to escape special HTML characters in
@@ -36,13 +35,6 @@ class FieldOptions extends Node
 	) {
 	}
 
-	public function defaults(): static
-	{
-		$this->options ??= new Options();
-
-		return parent::defaults();
-	}
-
 	public static function factory(array $props, bool $safeMode = true): static
 	{
 		$options = match ($props['type']) {
@@ -67,7 +59,7 @@ class FieldOptions extends Node
 					OptionsQuery::polyfill($props['query'] ?? null),
 
 				default =>
-					[ 'type' => 'query', 'query' => $props['options']]
+					['type' => 'query', 'query' => $props['options']]
 			};
 		}
 
@@ -87,22 +79,18 @@ class FieldOptions extends Node
 		return $props;
 	}
 
-	public function resolve(ModelWithContent $model): Options
-	{
-		// apply default values
-		$this->defaults();
-
-		// already Options, return
-		if (is_a($this->options, Options::class) === true) {
-			return $this->options;
-		}
-
-		// resolve OptionsProvider (OptionsApi or OptionsQuery) to Options
-		return $this->options = $this->options->resolve($model, $this->safeMode);
-	}
-
 	public function render(ModelWithContent $model): array
 	{
 		return $this->resolve($model)->render($model);
 	}
+
+	public function resolve(ModelWithContent $model): Options
+	{
+		// resolve OptionsProvider (OptionsApi or OptionsQuery) to Options
+		if ($this->options instanceof OptionsProvider) {
+			return $this->options->resolve($model, $this->safeMode);
+		}
+
+		return $this->options;
+	}
 }