allow nulls

src/features/class-subquery-block-display.php

@@ -35,9 +35,9 @@ public function boot(): void {
 	/**
 	 * Filters the block content before it is rendered.
 	 *
-	 * @param string    $block_content The block content.
-	 * @param array     $parsed_block The block object.
-	 * @param \WP_Block $parent_block The parent block object.
+	 * @param string|null    $block_content The block content.
+	 * @param array          $parsed_block The block object.
+	 * @param \WP_Block|null $parent_block The parent block object.
 	 * @return string The block content.
 	 *
 	 * @phpstan-param array{
@@ -47,7 +47,7 @@ public function boot(): void {
 	 *     },
 	 * } $parsed_block The parsed block.
 	 */
-	public function filter_pre_render_block( string $block_content, array $parsed_block, \WP_Block $parent_block ): string|null {
+	public function filter_pre_render_block( string|null $block_content, array $parsed_block, \WP_Block|null $parent_block ): string|null {
 		if ( 'wp-curate/subquery' !== $parsed_block['blockName'] ) {
 			return $block_content;
 		}