[2.x] Update to new StyleCI rules

packages/framework/src/Facades/Features.php

@@ -150,7 +150,7 @@ public function toArray(): array
     }
 
     /** @internal This method is not covered by the backward compatibility promise. */
-    public static function mock(string $feature, bool $enabled = null): void
+    public static function mock(string $feature, ?bool $enabled = null): void
     {
         if ($enabled === true) {
             // Add the feature if it doesn't already exist.

packages/framework/src/Framework/Features/Navigation/NumericalPageOrderingHelper.php

@@ -36,7 +36,7 @@ public static function hasNumericalPrefix(string $identifier): bool
     /**
      * Splits a numbered identifier into its numerical prefix and the rest of the identifier.
      *
-     * @return array{integer, string}
+     * @return array{int, string}
      */
     public static function splitNumericPrefix(string $identifier): array
     {

packages/framework/src/Markdown/Processing/HeadingRenderer.php

@@ -27,7 +27,7 @@ class HeadingRenderer implements NodeRendererInterface
     protected array $headingRegistry = [];
 
     /** @param ?class-string<\Hyde\Pages\Concerns\HydePage> $pageClass */
-    public function __construct(string $pageClass = null, array &$headingRegistry = [])
+    public function __construct(?string $pageClass = null, array &$headingRegistry = [])
     {
         $this->pageClass = $pageClass;
         $this->headingRegistry = &$headingRegistry;