diff -r 34716fd837a4 -r be944660c56a wp/wp-includes/blocks/post-featured-image.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/blocks/post-featured-image.php	Wed Sep 21 18:19:35 2022 +0200
@@ -0,0 +1,47 @@
+<?php
+/**
+ * Server-side rendering of the `core/post-featured-image` block.
+ *
+ * @package WordPress
+ */
+
+/**
+ * Renders the `core/post-featured-image` 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 featured image for the current post.
+ */
+function render_block_core_post_featured_image( $attributes, $content, $block ) {
+	if ( ! isset( $block->context['postId'] ) ) {
+		return '';
+	}
+	$post_ID = $block->context['postId'];
+
+	$featured_image = get_the_post_thumbnail( $post_ID );
+	if ( ! $featured_image ) {
+		return '';
+	}
+
+	if ( isset( $attributes['isLink'] ) && $attributes['isLink'] ) {
+		$featured_image = sprintf( '<a href="%1s">%2s</a>', get_the_permalink( $post_ID ), $featured_image );
+	}
+
+	$wrapper_attributes = get_block_wrapper_attributes();
+
+	return '<figure ' . $wrapper_attributes . '>' . $featured_image . '</figure>';
+}
+
+/**
+ * Registers the `core/post-featured-image` block on the server.
+ */
+function register_block_core_post_featured_image() {
+	register_block_type_from_metadata(
+		__DIR__ . '/post-featured-image',
+		array(
+			'render_callback' => 'render_block_core_post_featured_image',
+		)
+	);
+}
+add_action( 'init', 'register_block_core_post_featured_image' );