diff -r be944660c56a -r 3d72ae0968f4 wp/wp-includes/blocks/comments-pagination-next.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/blocks/comments-pagination-next.php	Tue Sep 27 16:37:53 2022 +0200
@@ -0,0 +1,60 @@
+<?php
+/**
+ * Server-side rendering of the `core/comments-pagination-next` block.
+ *
+ * @package WordPress
+ */
+
+/**
+ * Renders the `core/comments-pagination-next` block on the server.
+ *
+ * @param array    $attributes Block attributes.
+ * @param string   $content    Block default content.
+ * @param WP_Block $block      Block instance.
+ *
+ * @return string Returns the next comments link for the query pagination.
+ */
+function render_block_core_comments_pagination_next( $attributes, $content, $block ) {
+	// Bail out early if the post ID is not set for some reason.
+	if ( empty( $block->context['postId'] ) ) {
+		return '';
+	}
+
+	$comment_vars     = build_comment_query_vars_from_block( $block );
+	$max_page         = ( new WP_Comment_Query( $comment_vars ) )->max_num_pages;
+	$default_label    = __( 'Newer Comments' );
+	$label            = isset( $attributes['label'] ) && ! empty( $attributes['label'] ) ? $attributes['label'] : $default_label;
+	$pagination_arrow = get_comments_pagination_arrow( $block, 'next' );
+
+	$filter_link_attributes = function() {
+		return get_block_wrapper_attributes();
+	};
+	add_filter( 'next_comments_link_attributes', $filter_link_attributes );
+
+	if ( $pagination_arrow ) {
+		$label .= $pagination_arrow;
+	}
+
+	$next_comments_link = get_next_comments_link( $label, $max_page );
+
+	remove_filter( 'next_posts_link_attributes', $filter_link_attributes );
+
+	if ( ! isset( $next_comments_link ) ) {
+		return '';
+	}
+	return $next_comments_link;
+}
+
+
+/**
+ * Registers the `core/comments-pagination-next` block on the server.
+ */
+function register_block_core_comments_pagination_next() {
+	register_block_type_from_metadata(
+		__DIR__ . '/comments-pagination-next',
+		array(
+			'render_callback' => 'render_block_core_comments_pagination_next',
+		)
+	);
+}
+add_action( 'init', 'register_block_core_comments_pagination_next' );