Add an extra comment

src/wp-includes/block-template-utils.php

@@ -1179,13 +1179,15 @@ function get_block_templates( $query = array(), $template_type = 'wp_template' )
 		unset( $template_files_query['post_type'] );
 		$template_files = _get_block_templates_files( $template_type, $template_files_query );
 		foreach ( $template_files as $template_file ) {
-			if ( isset( $query['post_type'] ) && ! isset( $template_file['postTypes'] ) ) { // The custom templates with no associated post types are available for all post types.
+			// The custom templates with no associated post types are available for all post types.
+			if ( isset( $query['post_type'] ) && ! isset( $template_file['postTypes'] ) ) {
 				$candidate              = _build_block_template_result_from_file( $template_file, $template_type );
 				$default_template_types = get_default_block_template_types();
 				if ( ! isset( $default_template_types[ $candidate->slug ] ) ) {
 					$query_result[] = $candidate;
 				}
 			} elseif (
+				// If the query doesn't specify a post type, or it does and the template has the post type, add it.
 				! isset( $query['post_type'] ) ||
 				( isset( $query['post_type'] ) && isset( $template_file['postTypes'] ) && in_array( $query['post_type'], $template_file['postTypes'], true ) )
 			) {